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Finding the Fourth Proportional to 217,947.33, 300,901.50 and 172,807.65

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Solution

The fourth proportional to 217,947.33, 300,901.50 and 172,807.65 is: 238,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,947.33 : 300,901.50 = 172,807.65 : x
  2. Step 2: Convert to fraction form
    217,947.33/300,901.50 = 172,807.65/x
  3. Step 3: Cross multiply
    217,947.33x = 300,901.50 × 172,807.65
  4. Step 4: Simplify right side
    217,947.33x = 51,998,081,096.48
  5. Step 5: Solve for x
    x = 51,998,081,096.48/217,947.33
  6. Step 6: Final answer
    x = 238,580.95

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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.