Home / 391,631.36-540,535.36-238,719.36

Finding the Fourth Proportional to 391,631.36, 540,535.36 and 238,719.36

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Solution

The fourth proportional to 391,631.36, 540,535.36 and 238,719.36 is: 329,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,631.36 : 540,535.36 = 238,719.36 : x
  2. Step 2: Convert to fraction form
    391,631.36/540,535.36 = 238,719.36/x
  3. Step 3: Cross multiply
    391,631.36x = 540,535.36 × 238,719.36
  4. Step 4: Simplify right side
    391,631.36x = 129,036,255,196.57
  5. Step 5: Solve for x
    x = 129,036,255,196.57/391,631.36
  6. Step 6: Final answer
    x = 329,483.97

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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.