Home / 238,678.35-329,384.60-131,256.55

Finding the Fourth Proportional to 238,678.35, 329,384.60 and 131,256.55

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Solution

The fourth proportional to 238,678.35, 329,384.60 and 131,256.55 is: 181,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,678.35 : 329,384.60 = 131,256.55 : x
  2. Step 2: Convert to fraction form
    238,678.35/329,384.60 = 131,256.55/x
  3. Step 3: Cross multiply
    238,678.35x = 329,384.60 × 131,256.55
  4. Step 4: Simplify right side
    238,678.35x = 43,233,886,219.13
  5. Step 5: Solve for x
    x = 43,233,886,219.13/238,678.35
  6. Step 6: Final answer
    x = 181,138.70

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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.