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Finding the Fourth Proportional to 428,767.38, 591,656.28 and 247,537.80

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Solution

The fourth proportional to 428,767.38, 591,656.28 and 247,537.80 is: 341,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,767.38 : 591,656.28 = 247,537.80 : x
  2. Step 2: Convert to fraction form
    428,767.38/591,656.28 = 247,537.80/x
  3. Step 3: Cross multiply
    428,767.38x = 591,656.28 × 247,537.80
  4. Step 4: Simplify right side
    428,767.38x = 146,457,293,907.38
  5. Step 5: Solve for x
    x = 146,457,293,907.38/428,767.38
  6. Step 6: Final answer
    x = 341,577.51

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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.