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Finding the Fourth Proportional to 402,655.70, 603,983.55 and 153,305.30

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Solution

The fourth proportional to 402,655.70, 603,983.55 and 153,305.30 is: 229,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,655.70 : 603,983.55 = 153,305.30 : x
  2. Step 2: Convert to fraction form
    402,655.70/603,983.55 = 153,305.30/x
  3. Step 3: Cross multiply
    402,655.70x = 603,983.55 × 153,305.30
  4. Step 4: Simplify right side
    402,655.70x = 92,593,879,327.82
  5. Step 5: Solve for x
    x = 92,593,879,327.82/402,655.70
  6. Step 6: Final answer
    x = 229,957.95

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Similar ratio
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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.