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Finding the Fourth Proportional to 478,381.59, 717,323.25 and 178,615.65

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Solution

The fourth proportional to 478,381.59, 717,323.25 and 178,615.65 is: 267,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,381.59 : 717,323.25 = 178,615.65 : x
  2. Step 2: Convert to fraction form
    478,381.59/717,323.25 = 178,615.65/x
  3. Step 3: Cross multiply
    478,381.59x = 717,323.25 × 178,615.65
  4. Step 4: Simplify right side
    478,381.59x = 128,125,158,558.86
  5. Step 5: Solve for x
    x = 128,125,158,558.86/478,381.59
  6. Step 6: Final answer
    x = 267,830.45

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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.