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Finding the Fourth Proportional to 478,388.80, 717,565.20 and 118,560.70

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Solution

The fourth proportional to 478,388.80, 717,565.20 and 118,560.70 is: 177,836.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,388.80 : 717,565.20 = 118,560.70 : x
  2. Step 2: Convert to fraction form
    478,388.80/717,565.20 = 118,560.70/x
  3. Step 3: Cross multiply
    478,388.80x = 717,565.20 × 118,560.70
  4. Step 4: Simplify right side
    478,388.80x = 85,075,032,407.64
  5. Step 5: Solve for x
    x = 85,075,032,407.64/478,388.80
  6. Step 6: Final answer
    x = 177,836.59

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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.