Home / 368,954,369.90-509,160,418.34-210,182,139.78

Finding the Fourth Proportional to 368,954,369.90, 509,160,418.34 and 210,182,139.78

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Solution

The fourth proportional to 368,954,369.90, 509,160,418.34 and 210,182,139.78 is: 290,053,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,954,369.90 : 509,160,418.34 = 210,182,139.78 : x
  2. Step 2: Convert to fraction form
    368,954,369.90/509,160,418.34 = 210,182,139.78/x
  3. Step 3: Cross multiply
    368,954,369.90x = 509,160,418.34 × 210,182,139.78
  4. Step 4: Simplify right side
    368,954,369.90x = 107,016,426,217,981,152
  5. Step 5: Solve for x
    x = 107,016,426,217,981,152/368,954,369.90
  6. Step 6: Final answer
    x = 290,053,282.87

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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.