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Finding the Fourth Proportional to 292,855.87, 439,117.35 and 115,266.61

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Solution

The fourth proportional to 292,855.87, 439,117.35 and 115,266.61 is: 172,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,855.87 : 439,117.35 = 115,266.61 : x
  2. Step 2: Convert to fraction form
    292,855.87/439,117.35 = 115,266.61/x
  3. Step 3: Cross multiply
    292,855.87x = 439,117.35 × 115,266.61
  4. Step 4: Simplify right side
    292,855.87x = 50,615,568,326.68
  5. Step 5: Solve for x
    x = 50,615,568,326.68/292,855.87
  6. Step 6: Final answer
    x = 172,834.40

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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.