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Finding the Fourth Proportional to 428,575.32, 591,441.96 and 234,970.20

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Solution

The fourth proportional to 428,575.32, 591,441.96 and 234,970.20 is: 324,263.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,575.32 : 591,441.96 = 234,970.20 : x
  2. Step 2: Convert to fraction form
    428,575.32/591,441.96 = 234,970.20/x
  3. Step 3: Cross multiply
    428,575.32x = 591,441.96 × 234,970.20
  4. Step 4: Simplify right side
    428,575.32x = 138,971,235,629.59
  5. Step 5: Solve for x
    x = 138,971,235,629.59/428,575.32
  6. Step 6: Final answer
    x = 324,263.27

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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.