Home / 438,931.28-658,422.44-123,412.80

Finding the Fourth Proportional to 438,931.28, 658,422.44 and 123,412.80

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Solution

The fourth proportional to 438,931.28, 658,422.44 and 123,412.80 is: 185,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,931.28 : 658,422.44 = 123,412.80 : x
  2. Step 2: Convert to fraction form
    438,931.28/658,422.44 = 123,412.80/x
  3. Step 3: Cross multiply
    438,931.28x = 658,422.44 × 123,412.80
  4. Step 4: Simplify right side
    438,931.28x = 81,257,756,903.23
  5. Step 5: Solve for x
    x = 81,257,756,903.23/438,931.28
  6. Step 6: Final answer
    x = 185,126.38

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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.