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Finding the Fourth Proportional to 315,524.76, 435,441.81 and 172,298.10

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Solution

The fourth proportional to 315,524.76, 435,441.81 and 172,298.10 is: 237,781.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,524.76 : 435,441.81 = 172,298.10 : x
  2. Step 2: Convert to fraction form
    315,524.76/435,441.81 = 172,298.10/x
  3. Step 3: Cross multiply
    315,524.76x = 435,441.81 × 172,298.10
  4. Step 4: Simplify right side
    315,524.76x = 75,025,796,523.56
  5. Step 5: Solve for x
    x = 75,025,796,523.56/315,524.76
  6. Step 6: Final answer
    x = 237,781.01

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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.