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Finding the Fourth Proportional to 324,436.86, 486,701.86 and 99,816.16

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Solution

The fourth proportional to 324,436.86, 486,701.86 and 99,816.16 is: 149,738.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,436.86 : 486,701.86 = 99,816.16 : x
  2. Step 2: Convert to fraction form
    324,436.86/486,701.86 = 99,816.16/x
  3. Step 3: Cross multiply
    324,436.86x = 486,701.86 × 99,816.16
  4. Step 4: Simplify right side
    324,436.86x = 48,580,710,730.06
  5. Step 5: Solve for x
    x = 48,580,710,730.06/324,436.86
  6. Step 6: Final answer
    x = 149,738.57

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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.