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Finding the Fourth Proportional to 257,372.88, 385,760.88 and 152,280.24

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Solution

The fourth proportional to 257,372.88, 385,760.88 and 152,280.24 is: 228,243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,372.88 : 385,760.88 = 152,280.24 : x
  2. Step 2: Convert to fraction form
    257,372.88/385,760.88 = 152,280.24/x
  3. Step 3: Cross multiply
    257,372.88x = 385,760.88 × 152,280.24
  4. Step 4: Simplify right side
    257,372.88x = 58,743,759,389.01
  5. Step 5: Solve for x
    x = 58,743,759,389.01/257,372.88
  6. Step 6: Final answer
    x = 228,243.78

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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.