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Finding the Fourth Proportional to 280,960.92, 421,483.32 and 103,454.28

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Solution

The fourth proportional to 280,960.92, 421,483.32 and 103,454.28 is: 155,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,960.92 : 421,483.32 = 103,454.28 : x
  2. Step 2: Convert to fraction form
    280,960.92/421,483.32 = 103,454.28/x
  3. Step 3: Cross multiply
    280,960.92x = 421,483.32 × 103,454.28
  4. Step 4: Simplify right side
    280,960.92x = 43,604,253,402.61
  5. Step 5: Solve for x
    x = 43,604,253,402.61/280,960.92
  6. Step 6: Final answer
    x = 155,196.86

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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.