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Finding the Fourth Proportional to 223,543.80, 335,315.70 and 208,672.20

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Solution

The fourth proportional to 223,543.80, 335,315.70 and 208,672.20 is: 313,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,543.80 : 335,315.70 = 208,672.20 : x
  2. Step 2: Convert to fraction form
    223,543.80/335,315.70 = 208,672.20/x
  3. Step 3: Cross multiply
    223,543.80x = 335,315.70 × 208,672.20
  4. Step 4: Simplify right side
    223,543.80x = 69,971,064,813.54
  5. Step 5: Solve for x
    x = 69,971,064,813.54/223,543.80
  6. Step 6: Final answer
    x = 313,008.30

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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.