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Finding the Fourth Proportional to 428,198.95, 590,950.65 and 237,230.11

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Solution

The fourth proportional to 428,198.95, 590,950.65 and 237,230.11 is: 327,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,198.95 : 590,950.65 = 237,230.11 : x
  2. Step 2: Convert to fraction form
    428,198.95/590,950.65 = 237,230.11/x
  3. Step 3: Cross multiply
    428,198.95x = 590,950.65 × 237,230.11
  4. Step 4: Simplify right side
    428,198.95x = 140,191,287,704.07
  5. Step 5: Solve for x
    x = 140,191,287,704.07/428,198.95
  6. Step 6: Final answer
    x = 327,397.55

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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.