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Finding the Fourth Proportional to 293,222.80, 439,637.10 and 115,638.40

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Solution

The fourth proportional to 293,222.80, 439,637.10 and 115,638.40 is: 173,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,222.80 : 439,637.10 = 115,638.40 : x
  2. Step 2: Convert to fraction form
    293,222.80/439,637.10 = 115,638.40/x
  3. Step 3: Cross multiply
    293,222.80x = 439,637.10 × 115,638.40
  4. Step 4: Simplify right side
    293,222.80x = 50,838,930,824.64
  5. Step 5: Solve for x
    x = 50,838,930,824.64/293,222.80
  6. Step 6: Final answer
    x = 173,379.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.