Home / 280,434,718.50-386,992,781.91-156,676,325.10

Finding the Fourth Proportional to 280,434,718.50, 386,992,781.91 and 156,676,325.10

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Solution

The fourth proportional to 280,434,718.50, 386,992,781.91 and 156,676,325.10 is: 216,209,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,434,718.50 : 386,992,781.91 = 156,676,325.10 : x
  2. Step 2: Convert to fraction form
    280,434,718.50/386,992,781.91 = 156,676,325.10/x
  3. Step 3: Cross multiply
    280,434,718.50x = 386,992,781.91 × 156,676,325.10
  4. Step 4: Simplify right side
    280,434,718.50x = 60,632,606,909,884,560
  5. Step 5: Solve for x
    x = 60,632,606,909,884,560/280,434,718.50
  6. Step 6: Final answer
    x = 216,209,345.38

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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.