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Finding the Fourth Proportional to 381,112.50, 525,944.88 and 215,527.20

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Solution

The fourth proportional to 381,112.50, 525,944.88 and 215,527.20 is: 297,432.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,112.50 : 525,944.88 = 215,527.20 : x
  2. Step 2: Convert to fraction form
    381,112.50/525,944.88 = 215,527.20/x
  3. Step 3: Cross multiply
    381,112.50x = 525,944.88 × 215,527.20
  4. Step 4: Simplify right side
    381,112.50x = 113,355,427,340.74
  5. Step 5: Solve for x
    x = 113,355,427,340.74/381,112.50
  6. Step 6: Final answer
    x = 297,432.98

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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.