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Finding the Fourth Proportional to 493,343.31, 680,813.77 and 266,988.81

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Solution

The fourth proportional to 493,343.31, 680,813.77 and 266,988.81 is: 368,444.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,343.31 : 680,813.77 = 266,988.81 : x
  2. Step 2: Convert to fraction form
    493,343.31/680,813.77 = 266,988.81/x
  3. Step 3: Cross multiply
    493,343.31x = 680,813.77 × 266,988.81
  4. Step 4: Simplify right side
    493,343.31x = 181,769,658,283.91
  5. Step 5: Solve for x
    x = 181,769,658,283.91/493,343.31
  6. Step 6: Final answer
    x = 368,444.56

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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.