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Finding the Fourth Proportional to 268,851.30, 403,276.95 and 255,729.30

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Solution

The fourth proportional to 268,851.30, 403,276.95 and 255,729.30 is: 383,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,851.30 : 403,276.95 = 255,729.30 : x
  2. Step 2: Convert to fraction form
    268,851.30/403,276.95 = 255,729.30/x
  3. Step 3: Cross multiply
    268,851.30x = 403,276.95 × 255,729.30
  4. Step 4: Simplify right side
    268,851.30x = 103,129,732,129.64
  5. Step 5: Solve for x
    x = 103,129,732,129.64/268,851.30
  6. Step 6: Final answer
    x = 383,593.95

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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.