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Finding the Fourth Proportional to 276,465.73, 414,753.96 and 86,973.79

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Solution

The fourth proportional to 276,465.73, 414,753.96 and 86,973.79 is: 130,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,465.73 : 414,753.96 = 86,973.79 : x
  2. Step 2: Convert to fraction form
    276,465.73/414,753.96 = 86,973.79/x
  3. Step 3: Cross multiply
    276,465.73x = 414,753.96 × 86,973.79
  4. Step 4: Simplify right side
    276,465.73x = 36,072,723,818.71
  5. Step 5: Solve for x
    x = 36,072,723,818.71/276,465.73
  6. Step 6: Final answer
    x = 130,478.10

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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.