Home / 393,420,093.11-542,908,905.18-217,204,886.33

Finding the Fourth Proportional to 393,420,093.11, 542,908,905.18 and 217,204,886.33

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Solution

The fourth proportional to 393,420,093.11, 542,908,905.18 and 217,204,886.33 is: 299,736,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,420,093.11 : 542,908,905.18 = 217,204,886.33 : x
  2. Step 2: Convert to fraction form
    393,420,093.11/542,908,905.18 = 217,204,886.33/x
  3. Step 3: Cross multiply
    393,420,093.11x = 542,908,905.18 × 217,204,886.33
  4. Step 4: Simplify right side
    393,420,093.11x = 117,922,467,037,166,640
  5. Step 5: Solve for x
    x = 117,922,467,037,166,640/393,420,093.11
  6. Step 6: Final answer
    x = 299,736,767.65

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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.