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Finding the Fourth Proportional to 428,343.91, 591,118.10 and 237,360.49

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Solution

The fourth proportional to 428,343.91, 591,118.10 and 237,360.49 is: 327,559.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,343.91 : 591,118.10 = 237,360.49 : x
  2. Step 2: Convert to fraction form
    428,343.91/591,118.10 = 237,360.49/x
  3. Step 3: Cross multiply
    428,343.91x = 591,118.10 × 237,360.49
  4. Step 4: Simplify right side
    428,343.91x = 140,308,081,863.87
  5. Step 5: Solve for x
    x = 140,308,081,863.87/428,343.91
  6. Step 6: Final answer
    x = 327,559.42

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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.