Home / 487,958.57-731,966.55-188,440.71

Finding the Fourth Proportional to 487,958.57, 731,966.55 and 188,440.71

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Solution

The fourth proportional to 487,958.57, 731,966.55 and 188,440.71 is: 282,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,958.57 : 731,966.55 = 188,440.71 : x
  2. Step 2: Convert to fraction form
    487,958.57/731,966.55 = 188,440.71/x
  3. Step 3: Cross multiply
    487,958.57x = 731,966.55 × 188,440.71
  4. Step 4: Simplify right side
    487,958.57x = 137,932,296,378.25
  5. Step 5: Solve for x
    x = 137,932,296,378.25/487,958.57
  6. Step 6: Final answer
    x = 282,672.15

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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.