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Finding the Fourth Proportional to 492,432.60, 679,555.90 and 266,078.10

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Solution

The fourth proportional to 492,432.60, 679,555.90 and 266,078.10 is: 367,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,432.60 : 679,555.90 = 266,078.10 : x
  2. Step 2: Convert to fraction form
    492,432.60/679,555.90 = 266,078.10/x
  3. Step 3: Cross multiply
    492,432.60x = 679,555.90 × 266,078.10
  4. Step 4: Simplify right side
    492,432.60x = 180,814,942,715.79
  5. Step 5: Solve for x
    x = 180,814,942,715.79/492,432.60
  6. Step 6: Final answer
    x = 367,187.19

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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.