Home / 394,270,521.95-544,071,279.70-215,619,128.39

Finding the Fourth Proportional to 394,270,521.95, 544,071,279.70 and 215,619,128.39

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Solution

The fourth proportional to 394,270,521.95, 544,071,279.70 and 215,619,128.39 is: 297,542,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,270,521.95 : 544,071,279.70 = 215,619,128.39 : x
  2. Step 2: Convert to fraction form
    394,270,521.95/544,071,279.70 = 215,619,128.39/x
  3. Step 3: Cross multiply
    394,270,521.95x = 544,071,279.70 × 215,619,128.39
  4. Step 4: Simplify right side
    394,270,521.95x = 117,312,175,110,945,904
  5. Step 5: Solve for x
    x = 117,312,175,110,945,904/394,270,521.95
  6. Step 6: Final answer
    x = 297,542,343.59

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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.