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Finding the Fourth Proportional to 238,171.05, 328,679.78 and 130,750.88

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Solution

The fourth proportional to 238,171.05, 328,679.78 and 130,750.88 is: 180,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,171.05 : 328,679.78 = 130,750.88 : x
  2. Step 2: Convert to fraction form
    238,171.05/328,679.78 = 130,750.88/x
  3. Step 3: Cross multiply
    238,171.05x = 328,679.78 × 130,750.88
  4. Step 4: Simplify right side
    238,171.05x = 42,975,168,176.05
  5. Step 5: Solve for x
    x = 42,975,168,176.05/238,171.05
  6. Step 6: Final answer
    x = 180,438.25

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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.