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Finding the Fourth Proportional to 341,001.28, 511,817.40 and 172,639.90

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Solution

The fourth proportional to 341,001.28, 511,817.40 and 172,639.90 is: 259,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,001.28 : 511,817.40 = 172,639.90 : x
  2. Step 2: Convert to fraction form
    341,001.28/511,817.40 = 172,639.90/x
  3. Step 3: Cross multiply
    341,001.28x = 511,817.40 × 172,639.90
  4. Step 4: Simplify right side
    341,001.28x = 88,360,104,754.26
  5. Step 5: Solve for x
    x = 88,360,104,754.26/341,001.28
  6. Step 6: Final answer
    x = 259,119.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.