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Finding the Fourth Proportional to 457,379.76, 631,131.75 and 253,379.75

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Solution

The fourth proportional to 457,379.76, 631,131.75 and 253,379.75 is: 349,635.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,379.76 : 631,131.75 = 253,379.75 : x
  2. Step 2: Convert to fraction form
    457,379.76/631,131.75 = 253,379.75/x
  3. Step 3: Cross multiply
    457,379.76x = 631,131.75 × 253,379.75
  4. Step 4: Simplify right side
    457,379.76x = 159,916,001,876.40
  5. Step 5: Solve for x
    x = 159,916,001,876.40/457,379.76
  6. Step 6: Final answer
    x = 349,635.06

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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.