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Finding the Fourth Proportional to 324,711, 487,073.79 and 111,478.50

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Solution

The fourth proportional to 324,711, 487,073.79 and 111,478.50 is: 167,220.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,711 : 487,073.79 = 111,478.50 : x
  2. Step 2: Convert to fraction form
    324,711/487,073.79 = 111,478.50/x
  3. Step 3: Cross multiply
    324,711x = 487,073.79 × 111,478.50
  4. Step 4: Simplify right side
    324,711x = 54,298,255,498.52
  5. Step 5: Solve for x
    x = 54,298,255,498.52/324,711
  6. Step 6: Final answer
    x = 167,220.25

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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.