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Finding the Fourth Proportional to 324,547.20, 486,490.32 and 219,376.80

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Solution

The fourth proportional to 324,547.20, 486,490.32 and 219,376.80 is: 328,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,547.20 : 486,490.32 = 219,376.80 : x
  2. Step 2: Convert to fraction form
    324,547.20/486,490.32 = 219,376.80/x
  3. Step 3: Cross multiply
    324,547.20x = 486,490.32 × 219,376.80
  4. Step 4: Simplify right side
    324,547.20x = 106,724,689,632.58
  5. Step 5: Solve for x
    x = 106,724,689,632.58/324,547.20
  6. Step 6: Final answer
    x = 328,841.81

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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.