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Finding the Fourth Proportional to 269,442.40, 403,472.40 and 257,000.80

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Solution

The fourth proportional to 269,442.40, 403,472.40 and 257,000.80 is: 384,841.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,442.40 : 403,472.40 = 257,000.80 : x
  2. Step 2: Convert to fraction form
    269,442.40/403,472.40 = 257,000.80/x
  3. Step 3: Cross multiply
    269,442.40x = 403,472.40 × 257,000.80
  4. Step 4: Simplify right side
    269,442.40x = 103,692,729,577.92
  5. Step 5: Solve for x
    x = 103,692,729,577.92/269,442.40
  6. Step 6: Final answer
    x = 384,841.92

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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.