Home / 487,958.66-731,966.70-188,440.80

Finding the Fourth Proportional to 487,958.66, 731,966.70 and 188,440.80

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Solution

The fourth proportional to 487,958.66, 731,966.70 and 188,440.80 is: 282,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,958.66 : 731,966.70 = 188,440.80 : x
  2. Step 2: Convert to fraction form
    487,958.66/731,966.70 = 188,440.80/x
  3. Step 3: Cross multiply
    487,958.66x = 731,966.70 × 188,440.80
  4. Step 4: Simplify right side
    487,958.66x = 137,932,390,521.36
  5. Step 5: Solve for x
    x = 137,932,390,521.36/487,958.66
  6. Step 6: Final answer
    x = 282,672.29

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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.