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Finding the Fourth Proportional to 280,592.65, 420,951.17 and 80,897.46

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Solution

The fourth proportional to 280,592.65, 420,951.17 and 80,897.46 is: 121,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,592.65 : 420,951.17 = 80,897.46 : x
  2. Step 2: Convert to fraction form
    280,592.65/420,951.17 = 80,897.46/x
  3. Step 3: Cross multiply
    280,592.65x = 420,951.17 × 80,897.46
  4. Step 4: Simplify right side
    280,592.65x = 34,053,879,485.77
  5. Step 5: Solve for x
    x = 34,053,879,485.77/280,592.65
  6. Step 6: Final answer
    x = 121,364.12

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1.5x scale

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.