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Finding the Fourth Proportional to 324,279.48, 483,959.67 and 315,881.40

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Solution

The fourth proportional to 324,279.48, 483,959.67 and 315,881.40 is: 471,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,279.48 : 483,959.67 = 315,881.40 : x
  2. Step 2: Convert to fraction form
    324,279.48/483,959.67 = 315,881.40/x
  3. Step 3: Cross multiply
    324,279.48x = 483,959.67 × 315,881.40
  4. Step 4: Simplify right side
    324,279.48x = 152,873,858,103.14
  5. Step 5: Solve for x
    x = 152,873,858,103.14/324,279.48
  6. Step 6: Final answer
    x = 471,426.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.