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Finding the Fourth Proportional to 280,592.47, 420,950.89 and 80,897.27

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Solution

The fourth proportional to 280,592.47, 420,950.89 and 80,897.27 is: 121,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,592.47 : 420,950.89 = 80,897.27 : x
  2. Step 2: Convert to fraction form
    280,592.47/420,950.89 = 80,897.27/x
  3. Step 3: Cross multiply
    280,592.47x = 420,950.89 × 80,897.27
  4. Step 4: Simplify right side
    280,592.47x = 34,053,777,805.07
  5. Step 5: Solve for x
    x = 34,053,777,805.07/280,592.47
  6. Step 6: Final answer
    x = 121,363.84

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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.