Home / 398,425.90-597,979.05-161,938.30

Finding the Fourth Proportional to 398,425.90, 597,979.05 and 161,938.30

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Solution

The fourth proportional to 398,425.90, 597,979.05 and 161,938.30 is: 243,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,425.90 : 597,979.05 = 161,938.30 : x
  2. Step 2: Convert to fraction form
    398,425.90/597,979.05 = 161,938.30/x
  3. Step 3: Cross multiply
    398,425.90x = 597,979.05 × 161,938.30
  4. Step 4: Simplify right side
    398,425.90x = 96,835,710,792.62
  5. Step 5: Solve for x
    x = 96,835,710,792.62/398,425.90
  6. Step 6: Final answer
    x = 243,045.72

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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.