Home / 261,836.78-392,777.64-72,297.14

Finding the Fourth Proportional to 261,836.78, 392,777.64 and 72,297.14

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Solution

The fourth proportional to 261,836.78, 392,777.64 and 72,297.14 is: 108,451.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,836.78 : 392,777.64 = 72,297.14 : x
  2. Step 2: Convert to fraction form
    261,836.78/392,777.64 = 72,297.14/x
  3. Step 3: Cross multiply
    261,836.78x = 392,777.64 × 72,297.14
  4. Step 4: Simplify right side
    261,836.78x = 28,396,698,064.06
  5. Step 5: Solve for x
    x = 28,396,698,064.06/261,836.78
  6. Step 6: Final answer
    x = 108,451.91

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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.