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Finding the Fourth Proportional to 385,560.46, 578,367.72 and 119,285.92

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Solution

The fourth proportional to 385,560.46, 578,367.72 and 119,285.92 is: 178,937.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,560.46 : 578,367.72 = 119,285.92 : x
  2. Step 2: Convert to fraction form
    385,560.46/578,367.72 = 119,285.92/x
  3. Step 3: Cross multiply
    385,560.46x = 578,367.72 × 119,285.92
  4. Step 4: Simplify right side
    385,560.46x = 68,991,125,578.50
  5. Step 5: Solve for x
    x = 68,991,125,578.50/385,560.46
  6. Step 6: Final answer
    x = 178,937.24

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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.