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Finding the Fourth Proportional to 296,703.72, 445,049.30 and 72,065.21

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Solution

The fourth proportional to 296,703.72, 445,049.30 and 72,065.21 is: 108,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,703.72 : 445,049.30 = 72,065.21 : x
  2. Step 2: Convert to fraction form
    296,703.72/445,049.30 = 72,065.21/x
  3. Step 3: Cross multiply
    296,703.72x = 445,049.30 × 72,065.21
  4. Step 4: Simplify right side
    296,703.72x = 32,072,569,219.77
  5. Step 5: Solve for x
    x = 32,072,569,219.77/296,703.72
  6. Step 6: Final answer
    x = 108,096.28

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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.