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Finding the Fourth Proportional to 278,617.04, 417,838.04 and 118,691.30

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Solution

The fourth proportional to 278,617.04, 417,838.04 and 118,691.30 is: 177,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,617.04 : 417,838.04 = 118,691.30 : x
  2. Step 2: Convert to fraction form
    278,617.04/417,838.04 = 118,691.30/x
  3. Step 3: Cross multiply
    278,617.04x = 417,838.04 × 118,691.30
  4. Step 4: Simplify right side
    278,617.04x = 49,593,740,545.75
  5. Step 5: Solve for x
    x = 49,593,740,545.75/278,617.04
  6. Step 6: Final answer
    x = 177,999.67

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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.