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Finding the Fourth Proportional to 315,801.48, 435,836.52 and 172,583.22

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Solution

The fourth proportional to 315,801.48, 435,836.52 and 172,583.22 is: 238,181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,801.48 : 435,836.52 = 172,583.22 : x
  2. Step 2: Convert to fraction form
    315,801.48/435,836.52 = 172,583.22/x
  3. Step 3: Cross multiply
    315,801.48x = 435,836.52 × 172,583.22
  4. Step 4: Simplify right side
    315,801.48x = 75,218,070,015.19
  5. Step 5: Solve for x
    x = 75,218,070,015.19/315,801.48
  6. Step 6: Final answer
    x = 238,181.50

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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.