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Finding the Fourth Proportional to 310,243.55, 428,089.46 and 174,251.43

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Solution

The fourth proportional to 310,243.55, 428,089.46 and 174,251.43 is: 240,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,243.55 : 428,089.46 = 174,251.43 : x
  2. Step 2: Convert to fraction form
    310,243.55/428,089.46 = 174,251.43/x
  3. Step 3: Cross multiply
    310,243.55x = 428,089.46 × 174,251.43
  4. Step 4: Simplify right side
    310,243.55x = 74,595,199,701.67
  5. Step 5: Solve for x
    x = 74,595,199,701.67/310,243.55
  6. Step 6: Final answer
    x = 240,440.78

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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.