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Finding the Fourth Proportional to 478,481.32, 717,862.31 and 141,530.84

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Solution

The fourth proportional to 478,481.32, 717,862.31 and 141,530.84 is: 212,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,481.32 : 717,862.31 = 141,530.84 : x
  2. Step 2: Convert to fraction form
    478,481.32/717,862.31 = 141,530.84/x
  3. Step 3: Cross multiply
    478,481.32x = 717,862.31 × 141,530.84
  4. Step 4: Simplify right side
    478,481.32x = 101,599,652,503.16
  5. Step 5: Solve for x
    x = 101,599,652,503.16/478,481.32
  6. Step 6: Final answer
    x = 212,337.76

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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.