Home / 487,397.63-731,109-231,170.33

Finding the Fourth Proportional to 487,397.63, 731,109 and 231,170.33

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Solution

The fourth proportional to 487,397.63, 731,109 and 231,170.33 is: 346,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,397.63 : 731,109 = 231,170.33 : x
  2. Step 2: Convert to fraction form
    487,397.63/731,109 = 231,170.33/x
  3. Step 3: Cross multiply
    487,397.63x = 731,109 × 231,170.33
  4. Step 4: Simplify right side
    487,397.63x = 169,010,708,795.97
  5. Step 5: Solve for x
    x = 169,010,708,795.97/487,397.63
  6. Step 6: Final answer
    x = 346,761.45

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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.