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Finding the Fourth Proportional to 448,686.18, 672,883.65 and 149,086.31

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Solution

The fourth proportional to 448,686.18, 672,883.65 and 149,086.31 is: 223,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,686.18 : 672,883.65 = 149,086.31 : x
  2. Step 2: Convert to fraction form
    448,686.18/672,883.65 = 149,086.31/x
  3. Step 3: Cross multiply
    448,686.18x = 672,883.65 × 149,086.31
  4. Step 4: Simplify right side
    448,686.18x = 100,317,737,073.41
  5. Step 5: Solve for x
    x = 100,317,737,073.41/448,686.18
  6. Step 6: Final answer
    x = 223,581.07

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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.