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Finding the Fourth Proportional to 347,947.20, 521,920.80 and 170,800.20

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Solution

The fourth proportional to 347,947.20, 521,920.80 and 170,800.20 is: 256,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,947.20 : 521,920.80 = 170,800.20 : x
  2. Step 2: Convert to fraction form
    347,947.20/521,920.80 = 170,800.20/x
  3. Step 3: Cross multiply
    347,947.20x = 521,920.80 × 170,800.20
  4. Step 4: Simplify right side
    347,947.20x = 89,144,177,024.16
  5. Step 5: Solve for x
    x = 89,144,177,024.16/347,947.20
  6. Step 6: Final answer
    x = 256,200.30

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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.