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Finding the Fourth Proportional to 262,947.20, 394,420.80 and 156,502.40

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Solution

The fourth proportional to 262,947.20, 394,420.80 and 156,502.40 is: 234,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,947.20 : 394,420.80 = 156,502.40 : x
  2. Step 2: Convert to fraction form
    262,947.20/394,420.80 = 156,502.40/x
  3. Step 3: Cross multiply
    262,947.20x = 394,420.80 × 156,502.40
  4. Step 4: Simplify right side
    262,947.20x = 61,727,801,809.92
  5. Step 5: Solve for x
    x = 61,727,801,809.92/262,947.20
  6. Step 6: Final answer
    x = 234,753.60

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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.