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Finding the Fourth Proportional to 428,135.99, 590,841 and 237,167.15

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Solution

The fourth proportional to 428,135.99, 590,841 and 237,167.15 is: 327,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,135.99 : 590,841 = 237,167.15 : x
  2. Step 2: Convert to fraction form
    428,135.99/590,841 = 237,167.15/x
  3. Step 3: Cross multiply
    428,135.99x = 590,841 × 237,167.15
  4. Step 4: Simplify right side
    428,135.99x = 140,128,073,118.95
  5. Step 5: Solve for x
    x = 140,128,073,118.95/428,135.99
  6. Step 6: Final answer
    x = 327,298.05

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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.