Home / 287,257.28-430,505.76-220,442.08

Finding the Fourth Proportional to 287,257.28, 430,505.76 and 220,442.08

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Solution

The fourth proportional to 287,257.28, 430,505.76 and 220,442.08 is: 330,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,257.28 : 430,505.76 = 220,442.08 : x
  2. Step 2: Convert to fraction form
    287,257.28/430,505.76 = 220,442.08/x
  3. Step 3: Cross multiply
    287,257.28x = 430,505.76 × 220,442.08
  4. Step 4: Simplify right side
    287,257.28x = 94,901,585,186.38
  5. Step 5: Solve for x
    x = 94,901,585,186.38/287,257.28
  6. Step 6: Final answer
    x = 330,371.38

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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.