Home / 238,297.78-328,849.75-129,401.15

Finding the Fourth Proportional to 238,297.78, 328,849.75 and 129,401.15

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Solution

The fourth proportional to 238,297.78, 328,849.75 and 129,401.15 is: 178,572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,297.78 : 328,849.75 = 129,401.15 : x
  2. Step 2: Convert to fraction form
    238,297.78/328,849.75 = 129,401.15/x
  3. Step 3: Cross multiply
    238,297.78x = 328,849.75 × 129,401.15
  4. Step 4: Simplify right side
    238,297.78x = 42,553,535,827.21
  5. Step 5: Solve for x
    x = 42,553,535,827.21/238,297.78
  6. Step 6: Final answer
    x = 178,572.94

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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.