Home / 390,887,806.40-539,304,214.56-225,815,145.92

Finding the Fourth Proportional to 390,887,806.40, 539,304,214.56 and 225,815,145.92

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Solution

The fourth proportional to 390,887,806.40, 539,304,214.56 and 225,815,145.92 is: 311,555,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,887,806.40 : 539,304,214.56 = 225,815,145.92 : x
  2. Step 2: Convert to fraction form
    390,887,806.40/539,304,214.56 = 225,815,145.92/x
  3. Step 3: Cross multiply
    390,887,806.40x = 539,304,214.56 × 225,815,145.92
  4. Step 4: Simplify right side
    390,887,806.40x = 121,783,059,906,137,376
  5. Step 5: Solve for x
    x = 121,783,059,906,137,376/390,887,806.40
  6. Step 6: Final answer
    x = 311,555,024.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.