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Finding the Fourth Proportional to 315,871.62, 435,930.93 and 179,875.86

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Solution

The fourth proportional to 315,871.62, 435,930.93 and 179,875.86 is: 248,244.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,871.62 : 435,930.93 = 179,875.86 : x
  2. Step 2: Convert to fraction form
    315,871.62/435,930.93 = 179,875.86/x
  3. Step 3: Cross multiply
    315,871.62x = 435,930.93 × 179,875.86
  4. Step 4: Simplify right side
    315,871.62x = 78,413,450,934.35
  5. Step 5: Solve for x
    x = 78,413,450,934.35/315,871.62
  6. Step 6: Final answer
    x = 248,244.69

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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.