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Finding the Fourth Proportional to 252,354,865.80, 378,567,728.10 and 79,813,687.80

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Solution

The fourth proportional to 252,354,865.80, 378,567,728.10 and 79,813,687.80 is: 119,731,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,354,865.80 : 378,567,728.10 = 79,813,687.80 : x
  2. Step 2: Convert to fraction form
    252,354,865.80/378,567,728.10 = 79,813,687.80/x
  3. Step 3: Cross multiply
    252,354,865.80x = 378,567,728.10 × 79,813,687.80
  4. Step 4: Simplify right side
    252,354,865.80x = 30,214,886,461,728,688
  5. Step 5: Solve for x
    x = 30,214,886,461,728,688/252,354,865.80
  6. Step 6: Final answer
    x = 119,731,737.15

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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.