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Finding the Fourth Proportional to 517,033.71, 775,378.33 and 217,458.45

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Solution

The fourth proportional to 517,033.71, 775,378.33 and 217,458.45 is: 326,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,033.71 : 775,378.33 = 217,458.45 : x
  2. Step 2: Convert to fraction form
    517,033.71/775,378.33 = 217,458.45/x
  3. Step 3: Cross multiply
    517,033.71x = 775,378.33 × 217,458.45
  4. Step 4: Simplify right side
    517,033.71x = 168,612,569,805.39
  5. Step 5: Solve for x
    x = 168,612,569,805.39/517,033.71
  6. Step 6: Final answer
    x = 326,115.23

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.