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Finding the Fourth Proportional to 478,456.80, 717,512.40 and 241,720.80

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Solution

The fourth proportional to 478,456.80, 717,512.40 and 241,720.80 is: 362,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,456.80 : 717,512.40 = 241,720.80 : x
  2. Step 2: Convert to fraction form
    478,456.80/717,512.40 = 241,720.80/x
  3. Step 3: Cross multiply
    478,456.80x = 717,512.40 × 241,720.80
  4. Step 4: Simplify right side
    478,456.80x = 173,437,671,337.92
  5. Step 5: Solve for x
    x = 173,437,671,337.92/478,456.80
  6. Step 6: Final answer
    x = 362,493.90

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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.