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Finding the Fourth Proportional to 402,548.80, 603,823.20 and 253,249.60

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Solution

The fourth proportional to 402,548.80, 603,823.20 and 253,249.60 is: 379,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,548.80 : 603,823.20 = 253,249.60 : x
  2. Step 2: Convert to fraction form
    402,548.80/603,823.20 = 253,249.60/x
  3. Step 3: Cross multiply
    402,548.80x = 603,823.20 × 253,249.60
  4. Step 4: Simplify right side
    402,548.80x = 152,917,983,870.72
  5. Step 5: Solve for x
    x = 152,917,983,870.72/402,548.80
  6. Step 6: Final answer
    x = 379,874.40

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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.