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Finding the Fourth Proportional to 478,180.80, 717,246.72 and 162,643.68

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Solution

The fourth proportional to 478,180.80, 717,246.72 and 162,643.68 is: 243,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,180.80 : 717,246.72 = 162,643.68 : x
  2. Step 2: Convert to fraction form
    478,180.80/717,246.72 = 162,643.68/x
  3. Step 3: Cross multiply
    478,180.80x = 717,246.72 × 162,643.68
  4. Step 4: Simplify right side
    478,180.80x = 116,655,646,008.73
  5. Step 5: Solve for x
    x = 116,655,646,008.73/478,180.80
  6. Step 6: Final answer
    x = 243,957.19

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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.