Home / 397,376,419.62-548,369,780.72-218,758,856.21

Finding the Fourth Proportional to 397,376,419.62, 548,369,780.72 and 218,758,856.21

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Solution

The fourth proportional to 397,376,419.62, 548,369,780.72 and 218,758,856.21 is: 301,881,893.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,376,419.62 : 548,369,780.72 = 218,758,856.21 : x
  2. Step 2: Convert to fraction form
    397,376,419.62/548,369,780.72 = 218,758,856.21/x
  3. Step 3: Cross multiply
    397,376,419.62x = 548,369,780.72 × 218,758,856.21
  4. Step 4: Simplify right side
    397,376,419.62x = 119,960,746,006,600,080
  5. Step 5: Solve for x
    x = 119,960,746,006,600,080/397,376,419.62
  6. Step 6: Final answer
    x = 301,881,893.55

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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.