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Finding the Fourth Proportional to 270,701.20, 405,706.20 and 208,061.20

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Solution

The fourth proportional to 270,701.20, 405,706.20 and 208,061.20 is: 311,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,701.20 : 405,706.20 = 208,061.20 : x
  2. Step 2: Convert to fraction form
    270,701.20/405,706.20 = 208,061.20/x
  3. Step 3: Cross multiply
    270,701.20x = 405,706.20 × 208,061.20
  4. Step 4: Simplify right side
    270,701.20x = 84,411,718,819.44
  5. Step 5: Solve for x
    x = 84,411,718,819.44/270,701.20
  6. Step 6: Final answer
    x = 311,826.17

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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.