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Finding the Fourth Proportional to 276,320.25, 381,321.95 and 157,088.25

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Solution

The fourth proportional to 276,320.25, 381,321.95 and 157,088.25 is: 216,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,320.25 : 381,321.95 = 157,088.25 : x
  2. Step 2: Convert to fraction form
    276,320.25/381,321.95 = 157,088.25/x
  3. Step 3: Cross multiply
    276,320.25x = 381,321.95 × 157,088.25
  4. Step 4: Simplify right side
    276,320.25x = 59,901,197,026.65
  5. Step 5: Solve for x
    x = 59,901,197,026.65/276,320.25
  6. Step 6: Final answer
    x = 216,781.79

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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.