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Finding the Fourth Proportional to 398,001.47, 549,252.50 and 216,721.04

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Solution

The fourth proportional to 398,001.47, 549,252.50 and 216,721.04 is: 299,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,001.47 : 549,252.50 = 216,721.04 : x
  2. Step 2: Convert to fraction form
    398,001.47/549,252.50 = 216,721.04/x
  3. Step 3: Cross multiply
    398,001.47x = 549,252.50 × 216,721.04
  4. Step 4: Simplify right side
    398,001.47x = 119,034,569,192.73
  5. Step 5: Solve for x
    x = 119,034,569,192.73/398,001.47
  6. Step 6: Final answer
    x = 299,080.73

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1.5x scale

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.