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Finding the Fourth Proportional to 478,489.20, 717,733.79 and 141,503.59

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Solution

The fourth proportional to 478,489.20, 717,733.79 and 141,503.59 is: 212,255.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,489.20 : 717,733.79 = 141,503.59 : x
  2. Step 2: Convert to fraction form
    478,489.20/717,733.79 = 141,503.59/x
  3. Step 3: Cross multiply
    478,489.20x = 717,733.79 × 141,503.59
  4. Step 4: Simplify right side
    478,489.20x = 101,561,907,949.31
  5. Step 5: Solve for x
    x = 101,561,907,949.31/478,489.20
  6. Step 6: Final answer
    x = 212,255.38

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1.5x scale

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.