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Finding the Fourth Proportional to 578,814.89, 868,245.41 and 158,089.55

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Solution

The fourth proportional to 578,814.89, 868,245.41 and 158,089.55 is: 237,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,814.89 : 868,245.41 = 158,089.55 : x
  2. Step 2: Convert to fraction form
    578,814.89/868,245.41 = 158,089.55/x
  3. Step 3: Cross multiply
    578,814.89x = 868,245.41 × 158,089.55
  4. Step 4: Simplify right side
    578,814.89x = 137,260,522,210.46
  5. Step 5: Solve for x
    x = 137,260,522,210.46/578,814.89
  6. Step 6: Final answer
    x = 237,140.62

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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.