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Finding the Fourth Proportional to 315,873.62, 435,933.69 and 179,877.86

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Solution

The fourth proportional to 315,873.62, 435,933.69 and 179,877.86 is: 248,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,873.62 : 435,933.69 = 179,877.86 : x
  2. Step 2: Convert to fraction form
    315,873.62/435,933.69 = 179,877.86/x
  3. Step 3: Cross multiply
    315,873.62x = 435,933.69 × 179,877.86
  4. Step 4: Simplify right side
    315,873.62x = 78,414,819,259.10
  5. Step 5: Solve for x
    x = 78,414,819,259.10/315,873.62
  6. Step 6: Final answer
    x = 248,247.45

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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.