Home / 386,688,019.20-580,032,028.80-214,695,340.80

Finding the Fourth Proportional to 386,688,019.20, 580,032,028.80 and 214,695,340.80

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Solution

The fourth proportional to 386,688,019.20, 580,032,028.80 and 214,695,340.80 is: 322,043,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,688,019.20 : 580,032,028.80 = 214,695,340.80 : x
  2. Step 2: Convert to fraction form
    386,688,019.20/580,032,028.80 = 214,695,340.80/x
  3. Step 3: Cross multiply
    386,688,019.20x = 580,032,028.80 × 214,695,340.80
  4. Step 4: Simplify right side
    386,688,019.20x = 124,530,174,098,131,408
  5. Step 5: Solve for x
    x = 124,530,174,098,131,408/386,688,019.20
  6. Step 6: Final answer
    x = 322,043,011.20

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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.