Home / 278,718,880.10-418,051,305.21-84,632,001.38

Finding the Fourth Proportional to 278,718,880.10, 418,051,305.21 and 84,632,001.38

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Solution

The fourth proportional to 278,718,880.10, 418,051,305.21 and 84,632,001.38 is: 126,939,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,880.10 : 418,051,305.21 = 84,632,001.38 : x
  2. Step 2: Convert to fraction form
    278,718,880.10/418,051,305.21 = 84,632,001.38/x
  3. Step 3: Cross multiply
    278,718,880.10x = 418,051,305.21 × 84,632,001.38
  4. Step 4: Simplify right side
    278,718,880.10x = 35,380,518,639,443,516
  5. Step 5: Solve for x
    x = 35,380,518,639,443,516/278,718,880.10
  6. Step 6: Final answer
    x = 126,939,799.08

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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.