Home / 296,780.09-445,166.17-72,139.91

Finding the Fourth Proportional to 296,780.09, 445,166.17 and 72,139.91

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Solution

The fourth proportional to 296,780.09, 445,166.17 and 72,139.91 is: 108,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,780.09 : 445,166.17 = 72,139.91 : x
  2. Step 2: Convert to fraction form
    296,780.09/445,166.17 = 72,139.91/x
  3. Step 3: Cross multiply
    296,780.09x = 445,166.17 × 72,139.91
  4. Step 4: Simplify right side
    296,780.09x = 32,114,247,438.84
  5. Step 5: Solve for x
    x = 32,114,247,438.84/296,780.09
  6. Step 6: Final answer
    x = 108,208.90

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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.