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Finding the Fourth Proportional to 371,270.32, 555,963.42 and 311,140.72

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Solution

The fourth proportional to 371,270.32, 555,963.42 and 311,140.72 is: 465,921.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,270.32 : 555,963.42 = 311,140.72 : x
  2. Step 2: Convert to fraction form
    371,270.32/555,963.42 = 311,140.72/x
  3. Step 3: Cross multiply
    371,270.32x = 555,963.42 × 311,140.72
  4. Step 4: Simplify right side
    371,270.32x = 172,982,858,792.46
  5. Step 5: Solve for x
    x = 172,982,858,792.46/371,270.32
  6. Step 6: Final answer
    x = 465,921.59

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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.