Home / 397,376,419.12-548,369,780.02-218,758,855.71

Finding the Fourth Proportional to 397,376,419.12, 548,369,780.02 and 218,758,855.71

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Solution

The fourth proportional to 397,376,419.12, 548,369,780.02 and 218,758,855.71 is: 301,881,892.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,376,419.12 : 548,369,780.02 = 218,758,855.71 : x
  2. Step 2: Convert to fraction form
    397,376,419.12/548,369,780.02 = 218,758,855.71/x
  3. Step 3: Cross multiply
    397,376,419.12x = 548,369,780.02 × 218,758,855.71
  4. Step 4: Simplify right side
    397,376,419.12x = 119,960,745,583,119,616
  5. Step 5: Solve for x
    x = 119,960,745,583,119,616/397,376,419.12
  6. Step 6: Final answer
    x = 301,881,892.86

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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.