Home / 238,028.16-357,047.40-86,238.78

Finding the Fourth Proportional to 238,028.16, 357,047.40 and 86,238.78

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Solution

The fourth proportional to 238,028.16, 357,047.40 and 86,238.78 is: 129,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,028.16 : 357,047.40 = 86,238.78 : x
  2. Step 2: Convert to fraction form
    238,028.16/357,047.40 = 86,238.78/x
  3. Step 3: Cross multiply
    238,028.16x = 357,047.40 × 86,238.78
  4. Step 4: Simplify right side
    238,028.16x = 30,791,332,178.17
  5. Step 5: Solve for x
    x = 30,791,332,178.17/238,028.16
  6. Step 6: Final answer
    x = 129,360.04

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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.