Home / 428,270.72-591,013.13-234,683.15

Finding the Fourth Proportional to 428,270.72, 591,013.13 and 234,683.15

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Solution

The fourth proportional to 428,270.72, 591,013.13 and 234,683.15 is: 323,862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,270.72 : 591,013.13 = 234,683.15 : x
  2. Step 2: Convert to fraction form
    428,270.72/591,013.13 = 234,683.15/x
  3. Step 3: Cross multiply
    428,270.72x = 591,013.13 × 234,683.15
  4. Step 4: Simplify right side
    428,270.72x = 138,700,818,911.28
  5. Step 5: Solve for x
    x = 138,700,818,911.28/428,270.72
  6. Step 6: Final answer
    x = 323,862.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.