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Finding the Fourth Proportional to 428,754.60, 591,681.17 and 237,768.01

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Solution

The fourth proportional to 428,754.60, 591,681.17 and 237,768.01 is: 328,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,754.60 : 591,681.17 = 237,768.01 : x
  2. Step 2: Convert to fraction form
    428,754.60/591,681.17 = 237,768.01/x
  3. Step 3: Cross multiply
    428,754.60x = 591,681.17 × 237,768.01
  4. Step 4: Simplify right side
    428,754.60x = 140,682,853,460.59
  5. Step 5: Solve for x
    x = 140,682,853,460.59/428,754.60
  6. Step 6: Final answer
    x = 328,119.75

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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.