Home / 487,287.24-731,055.40-187,687.38

Finding the Fourth Proportional to 487,287.24, 731,055.40 and 187,687.38

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Solution

The fourth proportional to 487,287.24, 731,055.40 and 187,687.38 is: 281,579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,287.24 : 731,055.40 = 187,687.38 : x
  2. Step 2: Convert to fraction form
    487,287.24/731,055.40 = 187,687.38/x
  3. Step 3: Cross multiply
    487,287.24x = 731,055.40 × 187,687.38
  4. Step 4: Simplify right side
    487,287.24x = 137,209,871,348.78
  5. Step 5: Solve for x
    x = 137,209,871,348.78/487,287.24
  6. Step 6: Final answer
    x = 281,579.04

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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.