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Finding the Fourth Proportional to 428,328, 591,105.60 and 237,323.52

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Solution

The fourth proportional to 428,328, 591,105.60 and 237,323.52 is: 327,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,328 : 591,105.60 = 237,323.52 : x
  2. Step 2: Convert to fraction form
    428,328/591,105.60 = 237,323.52/x
  3. Step 3: Cross multiply
    428,328x = 591,105.60 × 237,323.52
  4. Step 4: Simplify right side
    428,328x = 140,283,261,683.71
  5. Step 5: Solve for x
    x = 140,283,261,683.71/428,328
  6. Step 6: Final answer
    x = 327,513.64

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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.