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Finding the Fourth Proportional to 315,244.26, 435,032.52 and 172,001.40

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Solution

The fourth proportional to 315,244.26, 435,032.52 and 172,001.40 is: 237,359.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,244.26 : 435,032.52 = 172,001.40 : x
  2. Step 2: Convert to fraction form
    315,244.26/435,032.52 = 172,001.40/x
  3. Step 3: Cross multiply
    315,244.26x = 435,032.52 × 172,001.40
  4. Step 4: Simplify right side
    315,244.26x = 74,826,202,485.53
  5. Step 5: Solve for x
    x = 74,826,202,485.53/315,244.26
  6. Step 6: Final answer
    x = 237,359.44

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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.