Home / 421,163,418,387.36-631,722,877,891.12-138,144,981,505.44

Finding the Fourth Proportional to 421,163,418,387.36, 631,722,877,891.12 and 138,144,981,505.44

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Solution

The fourth proportional to 421,163,418,387.36, 631,722,877,891.12 and 138,144,981,505.44 is: 207,210,174,181.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,163,418,387.36 : 631,722,877,891.12 = 138,144,981,505.44 : x
  2. Step 2: Convert to fraction form
    421,163,418,387.36/631,722,877,891.12 = 138,144,981,505.44/x
  3. Step 3: Cross multiply
    421,163,418,387.36x = 631,722,877,891.12 × 138,144,981,505.44
  4. Step 4: Simplify right side
    421,163,418,387.36x = 87,269,345,282,832,103,112,704
  5. Step 5: Solve for x
    x = 87,269,345,282,832,103,112,704/421,163,418,387.36
  6. Step 6: Final answer
    x = 207,210,174,181.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.