Home / 487,790.28-731,698.38-132,811.56

Finding the Fourth Proportional to 487,790.28, 731,698.38 and 132,811.56

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Solution

The fourth proportional to 487,790.28, 731,698.38 and 132,811.56 is: 199,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,790.28 : 731,698.38 = 132,811.56 : x
  2. Step 2: Convert to fraction form
    487,790.28/731,698.38 = 132,811.56/x
  3. Step 3: Cross multiply
    487,790.28x = 731,698.38 × 132,811.56
  4. Step 4: Simplify right side
    487,790.28x = 97,178,003,297.27
  5. Step 5: Solve for x
    x = 97,178,003,297.27/487,790.28
  6. Step 6: Final answer
    x = 199,220.87

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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.