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Finding the Fourth Proportional to 271,298.20, 406,947.30 and 218,810.20

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Solution

The fourth proportional to 271,298.20, 406,947.30 and 218,810.20 is: 328,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,298.20 : 406,947.30 = 218,810.20 : x
  2. Step 2: Convert to fraction form
    271,298.20/406,947.30 = 218,810.20/x
  3. Step 3: Cross multiply
    271,298.20x = 406,947.30 × 218,810.20
  4. Step 4: Simplify right side
    271,298.20x = 89,044,220,102.46
  5. Step 5: Solve for x
    x = 89,044,220,102.46/271,298.20
  6. Step 6: Final answer
    x = 328,215.30

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1.5x scale

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.