Home / 378,902,032.20-568,353,048.30-256,458,025.80

Finding the Fourth Proportional to 378,902,032.20, 568,353,048.30 and 256,458,025.80

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Solution

The fourth proportional to 378,902,032.20, 568,353,048.30 and 256,458,025.80 is: 384,687,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,902,032.20 : 568,353,048.30 = 256,458,025.80 : x
  2. Step 2: Convert to fraction form
    378,902,032.20/568,353,048.30 = 256,458,025.80/x
  3. Step 3: Cross multiply
    378,902,032.20x = 568,353,048.30 × 256,458,025.80
  4. Step 4: Simplify right side
    378,902,032.20x = 145,758,700,724,430,048
  5. Step 5: Solve for x
    x = 145,758,700,724,430,048/378,902,032.20
  6. Step 6: Final answer
    x = 384,687,038.70

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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.