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Finding the Fourth Proportional to 478,027.20, 717,073.20 and 162,507.90

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Solution

The fourth proportional to 478,027.20, 717,073.20 and 162,507.90 is: 243,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,027.20 : 717,073.20 = 162,507.90 : x
  2. Step 2: Convert to fraction form
    478,027.20/717,073.20 = 162,507.90/x
  3. Step 3: Cross multiply
    478,027.20x = 717,073.20 × 162,507.90
  4. Step 4: Simplify right side
    478,027.20x = 116,530,059,878.28
  5. Step 5: Solve for x
    x = 116,530,059,878.28/478,027.20
  6. Step 6: Final answer
    x = 243,772.86

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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.