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Finding the Fourth Proportional to 391,750.92, 540,616.50 and 212,902.92

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Solution

The fourth proportional to 391,750.92, 540,616.50 and 212,902.92 is: 293,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,750.92 : 540,616.50 = 212,902.92 : x
  2. Step 2: Convert to fraction form
    391,750.92/540,616.50 = 212,902.92/x
  3. Step 3: Cross multiply
    391,750.92x = 540,616.50 × 212,902.92
  4. Step 4: Simplify right side
    391,750.92x = 115,098,831,450.18
  5. Step 5: Solve for x
    x = 115,098,831,450.18/391,750.92
  6. Step 6: Final answer
    x = 293,806.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.