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Finding the Fourth Proportional to 394,381,443.80, 591,572,165.70 and 103,248,003.80

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Solution

The fourth proportional to 394,381,443.80, 591,572,165.70 and 103,248,003.80 is: 154,872,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,381,443.80 : 591,572,165.70 = 103,248,003.80 : x
  2. Step 2: Convert to fraction form
    394,381,443.80/591,572,165.70 = 103,248,003.80/x
  3. Step 3: Cross multiply
    394,381,443.80x = 591,572,165.70 × 103,248,003.80
  4. Step 4: Simplify right side
    394,381,443.80x = 61,078,645,212,167,832
  5. Step 5: Solve for x
    x = 61,078,645,212,167,832/394,381,443.80
  6. Step 6: Final answer
    x = 154,872,005.70

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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.