Home / 318,218,198.40-439,136,703.72-178,989,054.48

Finding the Fourth Proportional to 318,218,198.40, 439,136,703.72 and 178,989,054.48

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Solution

The fourth proportional to 318,218,198.40, 439,136,703.72 and 178,989,054.48 is: 247,002,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,218,198.40 : 439,136,703.72 = 178,989,054.48 : x
  2. Step 2: Convert to fraction form
    318,218,198.40/439,136,703.72 = 178,989,054.48/x
  3. Step 3: Cross multiply
    318,218,198.40x = 439,136,703.72 × 178,989,054.48
  4. Step 4: Simplify right side
    318,218,198.40x = 78,600,663,386,306,704
  5. Step 5: Solve for x
    x = 78,600,663,386,306,704/318,218,198.40
  6. Step 6: Final answer
    x = 247,002,414.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.