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Finding the Fourth Proportional to 428,904.60, 591,840.60 and 237,870.12

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Solution

The fourth proportional to 428,904.60, 591,840.60 and 237,870.12 is: 328,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,904.60 : 591,840.60 = 237,870.12 : x
  2. Step 2: Convert to fraction form
    428,904.60/591,840.60 = 237,870.12/x
  3. Step 3: Cross multiply
    428,904.60x = 591,840.60 × 237,870.12
  4. Step 4: Simplify right side
    428,904.60x = 140,781,194,542.87
  5. Step 5: Solve for x
    x = 140,781,194,542.87/428,904.60
  6. Step 6: Final answer
    x = 328,234.28

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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.