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Finding the Fourth Proportional to 315,171.85, 434,957.73 and 179,218.46

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Solution

The fourth proportional to 315,171.85, 434,957.73 and 179,218.46 is: 247,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,171.85 : 434,957.73 = 179,218.46 : x
  2. Step 2: Convert to fraction form
    315,171.85/434,957.73 = 179,218.46/x
  3. Step 3: Cross multiply
    315,171.85x = 434,957.73 × 179,218.46
  4. Step 4: Simplify right side
    315,171.85x = 77,952,454,535.70
  5. Step 5: Solve for x
    x = 77,952,454,535.70/315,171.85
  6. Step 6: Final answer
    x = 247,333.18

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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.