Home / 378,977,136.80-568,465,705.20-217,734,000.80

Finding the Fourth Proportional to 378,977,136.80, 568,465,705.20 and 217,734,000.80

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Solution

The fourth proportional to 378,977,136.80, 568,465,705.20 and 217,734,000.80 is: 326,601,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,977,136.80 : 568,465,705.20 = 217,734,000.80 : x
  2. Step 2: Convert to fraction form
    378,977,136.80/568,465,705.20 = 217,734,000.80/x
  3. Step 3: Cross multiply
    378,977,136.80x = 568,465,705.20 × 217,734,000.80
  4. Step 4: Simplify right side
    378,977,136.80x = 123,774,312,310,789,376
  5. Step 5: Solve for x
    x = 123,774,312,310,789,376/378,977,136.80
  6. Step 6: Final answer
    x = 326,601,001.20

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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.