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Finding the Fourth Proportional to 276,623.40, 414,935.10 and 136,655.40

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Solution

The fourth proportional to 276,623.40, 414,935.10 and 136,655.40 is: 204,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,623.40 : 414,935.10 = 136,655.40 : x
  2. Step 2: Convert to fraction form
    276,623.40/414,935.10 = 136,655.40/x
  3. Step 3: Cross multiply
    276,623.40x = 414,935.10 × 136,655.40
  4. Step 4: Simplify right side
    276,623.40x = 56,703,122,064.54
  5. Step 5: Solve for x
    x = 56,703,122,064.54/276,623.40
  6. Step 6: Final answer
    x = 204,983.10

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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.