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Finding the Fourth Proportional to 492,659.60, 679,869.94 and 266,305.10

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Solution

The fourth proportional to 492,659.60, 679,869.94 and 266,305.10 is: 367,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,659.60 : 679,869.94 = 266,305.10 : x
  2. Step 2: Convert to fraction form
    492,659.60/679,869.94 = 266,305.10/x
  3. Step 3: Cross multiply
    492,659.60x = 679,869.94 × 266,305.10
  4. Step 4: Simplify right side
    492,659.60x = 181,052,832,358.69
  5. Step 5: Solve for x
    x = 181,052,832,358.69/492,659.60
  6. Step 6: Final answer
    x = 367,500.87

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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.