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Finding the Fourth Proportional to 238,230.81, 328,759.09 and 130,807.78

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Solution

The fourth proportional to 238,230.81, 328,759.09 and 130,807.78 is: 180,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,230.81 : 328,759.09 = 130,807.78 : x
  2. Step 2: Convert to fraction form
    238,230.81/328,759.09 = 130,807.78/x
  3. Step 3: Cross multiply
    238,230.81x = 328,759.09 × 130,807.78
  4. Step 4: Simplify right side
    238,230.81x = 43,004,245,568.80
  5. Step 5: Solve for x
    x = 43,004,245,568.80/238,230.81
  6. Step 6: Final answer
    x = 180,515.05

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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.