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Finding the Fourth Proportional to 492,855.17, 680,139.65 and 266,500.13

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Solution

The fourth proportional to 492,855.17, 680,139.65 and 266,500.13 is: 367,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,855.17 : 680,139.65 = 266,500.13 : x
  2. Step 2: Convert to fraction form
    492,855.17/680,139.65 = 266,500.13/x
  3. Step 3: Cross multiply
    492,855.17x = 680,139.65 × 266,500.13
  4. Step 4: Simplify right side
    492,855.17x = 181,257,302,408.71
  5. Step 5: Solve for x
    x = 181,257,302,408.71/492,855.17
  6. Step 6: Final answer
    x = 367,769.92

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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.