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Finding the Fourth Proportional to 478,209.88, 717,147.96 and 141,161.32

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Solution

The fourth proportional to 478,209.88, 717,147.96 and 141,161.32 is: 211,692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,209.88 : 717,147.96 = 141,161.32 : x
  2. Step 2: Convert to fraction form
    478,209.88/717,147.96 = 141,161.32/x
  3. Step 3: Cross multiply
    478,209.88x = 717,147.96 × 141,161.32
  4. Step 4: Simplify right side
    478,209.88x = 101,233,552,668.91
  5. Step 5: Solve for x
    x = 101,233,552,668.91/478,209.88
  6. Step 6: Final answer
    x = 211,692.73

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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.