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Finding the Fourth Proportional to 312,474.92, 431,241.89 and 176,533.79

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Solution

The fourth proportional to 312,474.92, 431,241.89 and 176,533.79 is: 243,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,474.92 : 431,241.89 = 176,533.79 : x
  2. Step 2: Convert to fraction form
    312,474.92/431,241.89 = 176,533.79/x
  3. Step 3: Cross multiply
    312,474.92x = 431,241.89 × 176,533.79
  4. Step 4: Simplify right side
    312,474.92x = 76,128,762,209.58
  5. Step 5: Solve for x
    x = 76,128,762,209.58/312,474.92
  6. Step 6: Final answer
    x = 243,631.60

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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.