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Finding the Fourth Proportional to 315,587.23, 435,513.84 and 172,351.49

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Solution

The fourth proportional to 315,587.23, 435,513.84 and 172,351.49 is: 237,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,587.23 : 435,513.84 = 172,351.49 : x
  2. Step 2: Convert to fraction form
    315,587.23/435,513.84 = 172,351.49/x
  3. Step 3: Cross multiply
    315,587.23x = 435,513.84 × 172,351.49
  4. Step 4: Simplify right side
    315,587.23x = 75,061,459,670.50
  5. Step 5: Solve for x
    x = 75,061,459,670.50/315,587.23
  6. Step 6: Final answer
    x = 237,846.95

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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.