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Finding the Fourth Proportional to 366,861.80, 549,972.70 and 142,375.40

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Solution

The fourth proportional to 366,861.80, 549,972.70 and 142,375.40 is: 213,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,861.80 : 549,972.70 = 142,375.40 : x
  2. Step 2: Convert to fraction form
    366,861.80/549,972.70 = 142,375.40/x
  3. Step 3: Cross multiply
    366,861.80x = 549,972.70 × 142,375.40
  4. Step 4: Simplify right side
    366,861.80x = 78,302,583,151.58
  5. Step 5: Solve for x
    x = 78,302,583,151.58/366,861.80
  6. Step 6: Final answer
    x = 213,438.91

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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.