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Finding the Fourth Proportional to 315,837.33, 435,856.65 and 172,597.38

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Solution

The fourth proportional to 315,837.33, 435,856.65 and 172,597.38 is: 238,185.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,837.33 : 435,856.65 = 172,597.38 : x
  2. Step 2: Convert to fraction form
    315,837.33/435,856.65 = 172,597.38/x
  3. Step 3: Cross multiply
    315,837.33x = 435,856.65 × 172,597.38
  4. Step 4: Simplify right side
    315,837.33x = 75,227,716,015.57
  5. Step 5: Solve for x
    x = 75,227,716,015.57/315,837.33
  6. Step 6: Final answer
    x = 238,185.01

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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.