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Finding the Fourth Proportional to 386,073.60, 578,649.60 and 161,433.60

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Solution

The fourth proportional to 386,073.60, 578,649.60 and 161,433.60 is: 241,957.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,073.60 : 578,649.60 = 161,433.60 : x
  2. Step 2: Convert to fraction form
    386,073.60/578,649.60 = 161,433.60/x
  3. Step 3: Cross multiply
    386,073.60x = 578,649.60 × 161,433.60
  4. Step 4: Simplify right side
    386,073.60x = 93,413,488,066.56
  5. Step 5: Solve for x
    x = 93,413,488,066.56/386,073.60
  6. Step 6: Final answer
    x = 241,957.72

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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.