Home / 238,238.64-357,282.18-78,277.72

Finding the Fourth Proportional to 238,238.64, 357,282.18 and 78,277.72

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Solution

The fourth proportional to 238,238.64, 357,282.18 and 78,277.72 is: 117,391.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,238.64 : 357,282.18 = 78,277.72 : x
  2. Step 2: Convert to fraction form
    238,238.64/357,282.18 = 78,277.72/x
  3. Step 3: Cross multiply
    238,238.64x = 357,282.18 × 78,277.72
  4. Step 4: Simplify right side
    238,238.64x = 27,967,234,447.03
  5. Step 5: Solve for x
    x = 27,967,234,447.03/238,238.64
  6. Step 6: Final answer
    x = 117,391.68

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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.