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Finding the Fourth Proportional to 276,458.64, 381,532.92 and 155,612.04

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Solution

The fourth proportional to 276,458.64, 381,532.92 and 155,612.04 is: 214,755.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,458.64 : 381,532.92 = 155,612.04 : x
  2. Step 2: Convert to fraction form
    276,458.64/381,532.92 = 155,612.04/x
  3. Step 3: Cross multiply
    276,458.64x = 381,532.92 × 155,612.04
  4. Step 4: Simplify right side
    276,458.64x = 59,371,116,008.36
  5. Step 5: Solve for x
    x = 59,371,116,008.36/276,458.64
  6. Step 6: Final answer
    x = 214,755.87

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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.