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Finding the Fourth Proportional to 428,814.56, 591,755.28 and 237,797.12

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Solution

The fourth proportional to 428,814.56, 591,755.28 and 237,797.12 is: 328,155.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,814.56 : 591,755.28 = 237,797.12 : x
  2. Step 2: Convert to fraction form
    428,814.56/591,755.28 = 237,797.12/x
  3. Step 3: Cross multiply
    428,814.56x = 591,755.28 × 237,797.12
  4. Step 4: Simplify right side
    428,814.56x = 140,717,701,328.79
  5. Step 5: Solve for x
    x = 140,717,701,328.79/428,814.56
  6. Step 6: Final answer
    x = 328,155.14

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1.5x scale

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.