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Finding the Fourth Proportional to 457,691.15, 631,595.18 and 253,745.03

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Solution

The fourth proportional to 457,691.15, 631,595.18 and 253,745.03 is: 350,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,691.15 : 631,595.18 = 253,745.03 : x
  2. Step 2: Convert to fraction form
    457,691.15/631,595.18 = 253,745.03/x
  3. Step 3: Cross multiply
    457,691.15x = 631,595.18 × 253,745.03
  4. Step 4: Simplify right side
    457,691.15x = 160,264,135,373.34
  5. Step 5: Solve for x
    x = 160,264,135,373.34/457,691.15
  6. Step 6: Final answer
    x = 350,157.82

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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.