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Finding the Fourth Proportional to 492,785.61, 680,045.13 and 266,431.11

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Solution

The fourth proportional to 492,785.61, 680,045.13 and 266,431.11 is: 367,675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,785.61 : 680,045.13 = 266,431.11 : x
  2. Step 2: Convert to fraction form
    492,785.61/680,045.13 = 266,431.11/x
  3. Step 3: Cross multiply
    492,785.61x = 680,045.13 × 266,431.11
  4. Step 4: Simplify right side
    492,785.61x = 181,185,178,835.99
  5. Step 5: Solve for x
    x = 181,185,178,835.99/492,785.61
  6. Step 6: Final answer
    x = 367,675.47

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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.