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Finding the Fourth Proportional to 538,672.50, 808,008.75 and 206,248.50

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Solution

The fourth proportional to 538,672.50, 808,008.75 and 206,248.50 is: 309,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,672.50 : 808,008.75 = 206,248.50 : x
  2. Step 2: Convert to fraction form
    538,672.50/808,008.75 = 206,248.50/x
  3. Step 3: Cross multiply
    538,672.50x = 808,008.75 × 206,248.50
  4. Step 4: Simplify right side
    538,672.50x = 166,650,592,674.38
  5. Step 5: Solve for x
    x = 166,650,592,674.38/538,672.50
  6. Step 6: Final answer
    x = 309,372.75

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Similar ratio
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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.