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Finding the Fourth Proportional to 479,680.98, 719,396.10 and 142,630.86

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Solution

The fourth proportional to 479,680.98, 719,396.10 and 142,630.86 is: 213,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,680.98 : 719,396.10 = 142,630.86 : x
  2. Step 2: Convert to fraction form
    479,680.98/719,396.10 = 142,630.86/x
  3. Step 3: Cross multiply
    479,680.98x = 719,396.10 × 142,630.86
  4. Step 4: Simplify right side
    479,680.98x = 102,608,084,423.65
  5. Step 5: Solve for x
    x = 102,608,084,423.65/479,680.98
  6. Step 6: Final answer
    x = 213,909.01

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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.