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Finding the Fourth Proportional to 287,279.45, 396,432.85 and 164,683.94

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Solution

The fourth proportional to 287,279.45, 396,432.85 and 164,683.94 is: 227,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,279.45 : 396,432.85 = 164,683.94 : x
  2. Step 2: Convert to fraction form
    287,279.45/396,432.85 = 164,683.94/x
  3. Step 3: Cross multiply
    287,279.45x = 396,432.85 × 164,683.94
  4. Step 4: Simplify right side
    287,279.45x = 65,286,123,683.43
  5. Step 5: Solve for x
    x = 65,286,123,683.43/287,279.45
  6. Step 6: Final answer
    x = 227,256.50

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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.