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Finding the Fourth Proportional to 275,312.80, 412,866.80 and 109,066.40

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Solution

The fourth proportional to 275,312.80, 412,866.80 and 109,066.40 is: 163,559.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,312.80 : 412,866.80 = 109,066.40 : x
  2. Step 2: Convert to fraction form
    275,312.80/412,866.80 = 109,066.40/x
  3. Step 3: Cross multiply
    275,312.80x = 412,866.80 × 109,066.40
  4. Step 4: Simplify right side
    275,312.80x = 45,029,895,555.52
  5. Step 5: Solve for x
    x = 45,029,895,555.52/275,312.80
  6. Step 6: Final answer
    x = 163,559.03

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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.