Home / 386,749,819.20-580,124,728.80-131,448,187.20

Finding the Fourth Proportional to 386,749,819.20, 580,124,728.80 and 131,448,187.20

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Solution

The fourth proportional to 386,749,819.20, 580,124,728.80 and 131,448,187.20 is: 197,172,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,749,819.20 : 580,124,728.80 = 131,448,187.20 : x
  2. Step 2: Convert to fraction form
    386,749,819.20/580,124,728.80 = 131,448,187.20/x
  3. Step 3: Cross multiply
    386,749,819.20x = 580,124,728.80 × 131,448,187.20
  4. Step 4: Simplify right side
    386,749,819.20x = 76,256,343,950,651,632
  5. Step 5: Solve for x
    x = 76,256,343,950,651,632/386,749,819.20
  6. Step 6: Final answer
    x = 197,172,280.80

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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.