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Finding the Fourth Proportional to 238,144.79, 328,638.65 and 130,716.65

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Solution

The fourth proportional to 238,144.79, 328,638.65 and 130,716.65 is: 180,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,144.79 : 328,638.65 = 130,716.65 : x
  2. Step 2: Convert to fraction form
    238,144.79/328,638.65 = 130,716.65/x
  3. Step 3: Cross multiply
    238,144.79x = 328,638.65 × 130,716.65
  4. Step 4: Simplify right side
    238,144.79x = 42,958,543,388.52
  5. Step 5: Solve for x
    x = 42,958,543,388.52/238,144.79
  6. Step 6: Final answer
    x = 180,388.34

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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.