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Finding the Fourth Proportional to 448,085.63, 672,128.45 and 132,517.93

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Solution

The fourth proportional to 448,085.63, 672,128.45 and 132,517.93 is: 198,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,085.63 : 672,128.45 = 132,517.93 : x
  2. Step 2: Convert to fraction form
    448,085.63/672,128.45 = 132,517.93/x
  3. Step 3: Cross multiply
    448,085.63x = 672,128.45 × 132,517.93
  4. Step 4: Simplify right side
    448,085.63x = 89,069,070,888.11
  5. Step 5: Solve for x
    x = 89,069,070,888.11/448,085.63
  6. Step 6: Final answer
    x = 198,776.90

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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.