Home / 238,865.85-329,624.99-129,970.64

Finding the Fourth Proportional to 238,865.85, 329,624.99 and 129,970.64

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Solution

The fourth proportional to 238,865.85, 329,624.99 and 129,970.64 is: 179,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,865.85 : 329,624.99 = 129,970.64 : x
  2. Step 2: Convert to fraction form
    238,865.85/329,624.99 = 129,970.64/x
  3. Step 3: Cross multiply
    238,865.85x = 329,624.99 × 129,970.64
  4. Step 4: Simplify right side
    238,865.85x = 42,841,570,912.37
  5. Step 5: Solve for x
    x = 42,841,570,912.37/238,865.85
  6. Step 6: Final answer
    x = 179,354.10

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1.5x scale

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.