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Finding the Fourth Proportional to 155,649.84, 215,664.33 and 152,286.72

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Solution

The fourth proportional to 155,649.84, 215,664.33 and 152,286.72 is: 211,004.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,649.84 : 215,664.33 = 152,286.72 : x
  2. Step 2: Convert to fraction form
    155,649.84/215,664.33 = 152,286.72/x
  3. Step 3: Cross multiply
    155,649.84x = 215,664.33 × 152,286.72
  4. Step 4: Simplify right side
    155,649.84x = 32,842,813,436.70
  5. Step 5: Solve for x
    x = 32,842,813,436.70/155,649.84
  6. Step 6: Final answer
    x = 211,004.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.