Home / 397,376,403.12-548,369,757.96-218,758,839.72

Finding the Fourth Proportional to 397,376,403.12, 548,369,757.96 and 218,758,839.72

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Solution

The fourth proportional to 397,376,403.12, 548,369,757.96 and 218,758,839.72 is: 301,881,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,376,403.12 : 548,369,757.96 = 218,758,839.72 : x
  2. Step 2: Convert to fraction form
    397,376,403.12/548,369,757.96 = 218,758,839.72/x
  3. Step 3: Cross multiply
    397,376,403.12x = 548,369,757.96 × 218,758,839.72
  4. Step 4: Simplify right side
    397,376,403.12x = 119,960,731,987,219,520
  5. Step 5: Solve for x
    x = 119,960,731,987,219,520/397,376,403.12
  6. Step 6: Final answer
    x = 301,881,870.80

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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.