Home / 289,032.66-398,853.09-158,209.38

Finding the Fourth Proportional to 289,032.66, 398,853.09 and 158,209.38

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Solution

The fourth proportional to 289,032.66, 398,853.09 and 158,209.38 is: 218,322.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,032.66 : 398,853.09 = 158,209.38 : x
  2. Step 2: Convert to fraction form
    289,032.66/398,853.09 = 158,209.38/x
  3. Step 3: Cross multiply
    289,032.66x = 398,853.09 × 158,209.38
  4. Step 4: Simplify right side
    289,032.66x = 63,102,300,079.98
  5. Step 5: Solve for x
    x = 63,102,300,079.98/289,032.66
  6. Step 6: Final answer
    x = 218,322.39

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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.