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Finding the Fourth Proportional to 310,540.40, 428,591.04 and 174,585.56

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Solution

The fourth proportional to 310,540.40, 428,591.04 and 174,585.56 is: 240,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,540.40 : 428,591.04 = 174,585.56 : x
  2. Step 2: Convert to fraction form
    310,540.40/428,591.04 = 174,585.56/x
  3. Step 3: Cross multiply
    310,540.40x = 428,591.04 × 174,585.56
  4. Step 4: Simplify right side
    310,540.40x = 74,825,806,729.38
  5. Step 5: Solve for x
    x = 74,825,806,729.38/310,540.40
  6. Step 6: Final answer
    x = 240,953.53

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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.