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Finding the Fourth Proportional to 315,339.36, 435,169.80 and 172,102.44

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Solution

The fourth proportional to 315,339.36, 435,169.80 and 172,102.44 is: 237,502.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,339.36 : 435,169.80 = 172,102.44 : x
  2. Step 2: Convert to fraction form
    315,339.36/435,169.80 = 172,102.44/x
  3. Step 3: Cross multiply
    315,339.36x = 435,169.80 × 172,102.44
  4. Step 4: Simplify right side
    315,339.36x = 74,893,784,394.31
  5. Step 5: Solve for x
    x = 74,893,784,394.31/315,339.36
  6. Step 6: Final answer
    x = 237,502.18

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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.