Home / 391,900,943.27-540,813,348.06-213,277,238.75

Finding the Fourth Proportional to 391,900,943.27, 540,813,348.06 and 213,277,238.75

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Solution

The fourth proportional to 391,900,943.27, 540,813,348.06 and 213,277,238.75 is: 294,317,172.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,900,943.27 : 540,813,348.06 = 213,277,238.75 : x
  2. Step 2: Convert to fraction form
    391,900,943.27/540,813,348.06 = 213,277,238.75/x
  3. Step 3: Cross multiply
    391,900,943.27x = 540,813,348.06 × 213,277,238.75
  4. Step 4: Simplify right side
    391,900,943.27x = 115,343,177,553,379,456
  5. Step 5: Solve for x
    x = 115,343,177,553,379,456/391,900,943.27
  6. Step 6: Final answer
    x = 294,317,172.58

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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.