Home / 487,287.07-731,055.18-187,687.24

Finding the Fourth Proportional to 487,287.07, 731,055.18 and 187,687.24

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Solution

The fourth proportional to 487,287.07, 731,055.18 and 187,687.24 is: 281,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,287.07 : 731,055.18 = 187,687.24 : x
  2. Step 2: Convert to fraction form
    487,287.07/731,055.18 = 187,687.24/x
  3. Step 3: Cross multiply
    487,287.07x = 731,055.18 × 187,687.24
  4. Step 4: Simplify right side
    487,287.07x = 137,209,729,021.90
  5. Step 5: Solve for x
    x = 137,209,729,021.90/487,287.07
  6. Step 6: Final answer
    x = 281,578.84

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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.