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Finding the Fourth Proportional to 315,832.95, 435,848.58 and 172,593.90

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Solution

The fourth proportional to 315,832.95, 435,848.58 and 172,593.90 is: 238,179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,832.95 : 435,848.58 = 172,593.90 : x
  2. Step 2: Convert to fraction form
    315,832.95/435,848.58 = 172,593.90/x
  3. Step 3: Cross multiply
    315,832.95x = 435,848.58 × 172,593.90
  4. Step 4: Simplify right side
    315,832.95x = 75,224,806,231.66
  5. Step 5: Solve for x
    x = 75,224,806,231.66/315,832.95
  6. Step 6: Final answer
    x = 238,179.10

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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.