Home / 261,776.81-392,665.22-74,788.31

Finding the Fourth Proportional to 261,776.81, 392,665.22 and 74,788.31

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Solution

The fourth proportional to 261,776.81, 392,665.22 and 74,788.31 is: 112,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,776.81 : 392,665.22 = 74,788.31 : x
  2. Step 2: Convert to fraction form
    261,776.81/392,665.22 = 74,788.31/x
  3. Step 3: Cross multiply
    261,776.81x = 392,665.22 × 74,788.31
  4. Step 4: Simplify right side
    261,776.81x = 29,366,769,087.76
  5. Step 5: Solve for x
    x = 29,366,769,087.76/261,776.81
  6. Step 6: Final answer
    x = 112,182.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.