Home / 257,418,009.30-386,015,039.55-84,828,134.10

Finding the Fourth Proportional to 257,418,009.30, 386,015,039.55 and 84,828,134.10

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Solution

The fourth proportional to 257,418,009.30, 386,015,039.55 and 84,828,134.10 is: 127,205,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,418,009.30 : 386,015,039.55 = 84,828,134.10 : x
  2. Step 2: Convert to fraction form
    257,418,009.30/386,015,039.55 = 84,828,134.10/x
  3. Step 3: Cross multiply
    257,418,009.30x = 386,015,039.55 × 84,828,134.10
  4. Step 4: Simplify right side
    257,418,009.30x = 32,744,935,539,564,204
  5. Step 5: Solve for x
    x = 32,744,935,539,564,204/257,418,009.30
  6. Step 6: Final answer
    x = 127,205,301.71

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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.