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Finding the Fourth Proportional to 310,450.59, 428,409.81 and 174,490.20

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Solution

The fourth proportional to 310,450.59, 428,409.81 and 174,490.20 is: 240,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,450.59 : 428,409.81 = 174,490.20 : x
  2. Step 2: Convert to fraction form
    310,450.59/428,409.81 = 174,490.20/x
  3. Step 3: Cross multiply
    310,450.59x = 428,409.81 × 174,490.20
  4. Step 4: Simplify right side
    310,450.59x = 74,753,313,428.86
  5. Step 5: Solve for x
    x = 74,753,313,428.86/310,450.59
  6. Step 6: Final answer
    x = 240,789.73

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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.