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Finding the Fourth Proportional to 438,658.20, 605,342.70 and 237,454.20

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Solution

The fourth proportional to 438,658.20, 605,342.70 and 237,454.20 is: 327,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,658.20 : 605,342.70 = 237,454.20 : x
  2. Step 2: Convert to fraction form
    438,658.20/605,342.70 = 237,454.20/x
  3. Step 3: Cross multiply
    438,658.20x = 605,342.70 × 237,454.20
  4. Step 4: Simplify right side
    438,658.20x = 143,741,166,554.34
  5. Step 5: Solve for x
    x = 143,741,166,554.34/438,658.20
  6. Step 6: Final answer
    x = 327,683.76

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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.