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Finding the Fourth Proportional to 315,438.36, 435,266.64 and 179,489.58

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Solution

The fourth proportional to 315,438.36, 435,266.64 and 179,489.58 is: 247,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,438.36 : 435,266.64 = 179,489.58 : x
  2. Step 2: Convert to fraction form
    315,438.36/435,266.64 = 179,489.58/x
  3. Step 3: Cross multiply
    315,438.36x = 435,266.64 × 179,489.58
  4. Step 4: Simplify right side
    315,438.36x = 78,125,826,401.61
  5. Step 5: Solve for x
    x = 78,125,826,401.61/315,438.36
  6. Step 6: Final answer
    x = 247,673.83

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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.