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Finding the Fourth Proportional to 479,680.79, 719,280.20 and 159,719.55

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Solution

The fourth proportional to 479,680.79, 719,280.20 and 159,719.55 is: 239,499.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,680.79 : 719,280.20 = 159,719.55 : x
  2. Step 2: Convert to fraction form
    479,680.79/719,280.20 = 159,719.55/x
  3. Step 3: Cross multiply
    479,680.79x = 719,280.20 × 159,719.55
  4. Step 4: Simplify right side
    479,680.79x = 114,883,107,569.91
  5. Step 5: Solve for x
    x = 114,883,107,569.91/479,680.79
  6. Step 6: Final answer
    x = 239,499.08

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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.