Home / 485,427.20-728,140.17-130,441.22

Finding the Fourth Proportional to 485,427.20, 728,140.17 and 130,441.22

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Solution

The fourth proportional to 485,427.20, 728,140.17 and 130,441.22 is: 195,661.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,427.20 : 728,140.17 = 130,441.22 : x
  2. Step 2: Convert to fraction form
    485,427.20/728,140.17 = 130,441.22/x
  3. Step 3: Cross multiply
    485,427.20x = 728,140.17 × 130,441.22
  4. Step 4: Simplify right side
    485,427.20x = 94,979,493,926.16
  5. Step 5: Solve for x
    x = 94,979,493,926.16/485,427.20
  6. Step 6: Final answer
    x = 195,661.67

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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.