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Finding the Fourth Proportional to 238,987.80, 329,810.62 and 130,099.40

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Solution

The fourth proportional to 238,987.80, 329,810.62 and 130,099.40 is: 179,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,987.80 : 329,810.62 = 130,099.40 : x
  2. Step 2: Convert to fraction form
    238,987.80/329,810.62 = 130,099.40/x
  3. Step 3: Cross multiply
    238,987.80x = 329,810.62 × 130,099.40
  4. Step 4: Simplify right side
    238,987.80x = 42,908,163,775.63
  5. Step 5: Solve for x
    x = 42,908,163,775.63/238,987.80
  6. Step 6: Final answer
    x = 179,541.23

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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.