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Finding the Fourth Proportional to 492,690.33, 679,913.67 and 266,335.83

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Solution

The fourth proportional to 492,690.33, 679,913.67 and 266,335.83 is: 367,543.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,690.33 : 679,913.67 = 266,335.83 : x
  2. Step 2: Convert to fraction form
    492,690.33/679,913.67 = 266,335.83/x
  3. Step 3: Cross multiply
    492,690.33x = 679,913.67 × 266,335.83
  4. Step 4: Simplify right side
    492,690.33x = 181,085,371,627.80
  5. Step 5: Solve for x
    x = 181,085,371,627.80/492,690.33
  6. Step 6: Final answer
    x = 367,543.99

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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.