Home / 421,163,418,304.88-631,722,877,767.70-138,144,981,422.94

Finding the Fourth Proportional to 421,163,418,304.88, 631,722,877,767.70 and 138,144,981,422.94

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Solution

The fourth proportional to 421,163,418,304.88, 631,722,877,767.70 and 138,144,981,422.94 is: 207,210,174,057.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,163,418,304.88 : 631,722,877,767.70 = 138,144,981,422.94 : x
  2. Step 2: Convert to fraction form
    421,163,418,304.88/631,722,877,767.70 = 138,144,981,422.94/x
  3. Step 3: Cross multiply
    421,163,418,304.88x = 631,722,877,767.70 × 138,144,981,422.94
  4. Step 4: Simplify right side
    421,163,418,304.88x = 87,269,345,213,665,110,917,120
  5. Step 5: Solve for x
    x = 87,269,345,213,665,110,917,120/421,163,418,304.88
  6. Step 6: Final answer
    x = 207,210,174,057.64

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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.