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Finding the Fourth Proportional to 324,534.78, 486,746.01 and 87,822.18

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Solution

The fourth proportional to 324,534.78, 486,746.01 and 87,822.18 is: 131,718.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,534.78 : 486,746.01 = 87,822.18 : x
  2. Step 2: Convert to fraction form
    324,534.78/486,746.01 = 87,822.18/x
  3. Step 3: Cross multiply
    324,534.78x = 486,746.01 × 87,822.18
  4. Step 4: Simplify right side
    324,534.78x = 42,747,095,704.50
  5. Step 5: Solve for x
    x = 42,747,095,704.50/324,534.78
  6. Step 6: Final answer
    x = 131,718.07

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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.