Home / 394,938,743.61-545,017,286.86-218,723,044.76

Finding the Fourth Proportional to 394,938,743.61, 545,017,286.86 and 218,723,044.76

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Solution

The fourth proportional to 394,938,743.61, 545,017,286.86 and 218,723,044.76 is: 301,838,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,938,743.61 : 545,017,286.86 = 218,723,044.76 : x
  2. Step 2: Convert to fraction form
    394,938,743.61/545,017,286.86 = 218,723,044.76/x
  3. Step 3: Cross multiply
    394,938,743.61x = 545,017,286.86 × 218,723,044.76
  4. Step 4: Simplify right side
    394,938,743.61x = 119,207,840,425,034,832
  5. Step 5: Solve for x
    x = 119,207,840,425,034,832/394,938,743.61
  6. Step 6: Final answer
    x = 301,838,810.08

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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.