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Finding the Fourth Proportional to 448,717.95, 672,699.39 and 208,709.89

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Solution

The fourth proportional to 448,717.95, 672,699.39 and 208,709.89 is: 312,889.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,717.95 : 672,699.39 = 208,709.89 : x
  2. Step 2: Convert to fraction form
    448,717.95/672,699.39 = 208,709.89/x
  3. Step 3: Cross multiply
    448,717.95x = 672,699.39 × 208,709.89
  4. Step 4: Simplify right side
    448,717.95x = 140,399,015,689.97
  5. Step 5: Solve for x
    x = 140,399,015,689.97/448,717.95
  6. Step 6: Final answer
    x = 312,889.23

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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.