Home / 289,025,397.22-398,855,440.08-156,866,397.88

Finding the Fourth Proportional to 289,025,397.22, 398,855,440.08 and 156,866,397.88

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Solution

The fourth proportional to 289,025,397.22, 398,855,440.08 and 156,866,397.88 is: 216,475,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,025,397.22 : 398,855,440.08 = 156,866,397.88 : x
  2. Step 2: Convert to fraction form
    289,025,397.22/398,855,440.08 = 156,866,397.88/x
  3. Step 3: Cross multiply
    289,025,397.22x = 398,855,440.08 × 156,866,397.88
  4. Step 4: Simplify right side
    289,025,397.22x = 62,567,016,160,191,776
  5. Step 5: Solve for x
    x = 62,567,016,160,191,776/289,025,397.22
  6. Step 6: Final answer
    x = 216,475,841.78

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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.