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Finding the Fourth Proportional to 387,226.79, 580,709.20 and 147,283.73

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Solution

The fourth proportional to 387,226.79, 580,709.20 and 147,283.73 is: 220,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,226.79 : 580,709.20 = 147,283.73 : x
  2. Step 2: Convert to fraction form
    387,226.79/580,709.20 = 147,283.73/x
  3. Step 3: Cross multiply
    387,226.79x = 580,709.20 × 147,283.73
  4. Step 4: Simplify right side
    387,226.79x = 85,529,018,104.88
  5. Step 5: Solve for x
    x = 85,529,018,104.88/387,226.79
  6. Step 6: Final answer
    x = 220,875.78

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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.