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Finding the Fourth Proportional to 296,515.75, 408,885.88 and 253,637.18

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Solution

The fourth proportional to 296,515.75, 408,885.88 and 253,637.18 is: 349,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,515.75 : 408,885.88 = 253,637.18 : x
  2. Step 2: Convert to fraction form
    296,515.75/408,885.88 = 253,637.18/x
  3. Step 3: Cross multiply
    296,515.75x = 408,885.88 × 253,637.18
  4. Step 4: Simplify right side
    296,515.75x = 103,708,661,545.02
  5. Step 5: Solve for x
    x = 103,708,661,545.02/296,515.75
  6. Step 6: Final answer
    x = 349,757.68

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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.