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Finding the Fourth Proportional to 478,493.64, 717,740.45 and 141,508.04

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Solution

The fourth proportional to 478,493.64, 717,740.45 and 141,508.04 is: 212,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,493.64 : 717,740.45 = 141,508.04 : x
  2. Step 2: Convert to fraction form
    478,493.64/717,740.45 = 141,508.04/x
  3. Step 3: Cross multiply
    478,493.64x = 717,740.45 × 141,508.04
  4. Step 4: Simplify right side
    478,493.64x = 101,566,040,011.98
  5. Step 5: Solve for x
    x = 101,566,040,011.98/478,493.64
  6. Step 6: Final answer
    x = 212,262.05

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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.