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Finding the Fourth Proportional to 448,715.95, 672,696.39 and 208,707.89

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Solution

The fourth proportional to 448,715.95, 672,696.39 and 208,707.89 is: 312,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,715.95 : 672,696.39 = 208,707.89 : x
  2. Step 2: Convert to fraction form
    448,715.95/672,696.39 = 208,707.89/x
  3. Step 3: Cross multiply
    448,715.95x = 672,696.39 × 208,707.89
  4. Step 4: Simplify right side
    448,715.95x = 140,397,045,370.61
  5. Step 5: Solve for x
    x = 140,397,045,370.61/448,715.95
  6. Step 6: Final answer
    x = 312,886.24

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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.