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Finding the Fourth Proportional to 218,866.80, 328,045.05 and 100,550.10

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Solution

The fourth proportional to 218,866.80, 328,045.05 and 100,550.10 is: 150,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,866.80 : 328,045.05 = 100,550.10 : x
  2. Step 2: Convert to fraction form
    218,866.80/328,045.05 = 100,550.10/x
  3. Step 3: Cross multiply
    218,866.80x = 328,045.05 × 100,550.10
  4. Step 4: Simplify right side
    218,866.80x = 32,984,962,582.01
  5. Step 5: Solve for x
    x = 32,984,962,582.01/218,866.80
  6. Step 6: Final answer
    x = 150,707.93

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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.