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Finding the Fourth Proportional to 389,432.60, 584,148.90 and 167,816.60

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Solution

The fourth proportional to 389,432.60, 584,148.90 and 167,816.60 is: 251,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,432.60 : 584,148.90 = 167,816.60 : x
  2. Step 2: Convert to fraction form
    389,432.60/584,148.90 = 167,816.60/x
  3. Step 3: Cross multiply
    389,432.60x = 584,148.90 × 167,816.60
  4. Step 4: Simplify right side
    389,432.60x = 98,029,882,291.74
  5. Step 5: Solve for x
    x = 98,029,882,291.74/389,432.60
  6. Step 6: Final answer
    x = 251,724.90

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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.