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Finding the Fourth Proportional to 238,139.44, 328,636.67 and 130,719.47

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Solution

The fourth proportional to 238,139.44, 328,636.67 and 130,719.47 is: 180,395.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,139.44 : 328,636.67 = 130,719.47 : x
  2. Step 2: Convert to fraction form
    238,139.44/328,636.67 = 130,719.47/x
  3. Step 3: Cross multiply
    238,139.44x = 328,636.67 × 130,719.47
  4. Step 4: Simplify right side
    238,139.44x = 42,959,209,028.18
  5. Step 5: Solve for x
    x = 42,959,209,028.18/238,139.44
  6. Step 6: Final answer
    x = 180,395.19

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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.