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Finding the Fourth Proportional to 252,355,754.80, 378,569,061.60 and 79,814,576.80

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Solution

The fourth proportional to 252,355,754.80, 378,569,061.60 and 79,814,576.80 is: 119,733,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,355,754.80 : 378,569,061.60 = 79,814,576.80 : x
  2. Step 2: Convert to fraction form
    252,355,754.80/378,569,061.60 = 79,814,576.80/x
  3. Step 3: Cross multiply
    252,355,754.80x = 378,569,061.60 × 79,814,576.80
  4. Step 4: Simplify right side
    252,355,754.80x = 30,215,329,441,177,132
  5. Step 5: Solve for x
    x = 30,215,329,441,177,132/252,355,754.80
  6. Step 6: Final answer
    x = 119,733,070.74

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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.