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Finding the Fourth Proportional to 245,398.76, 338,648.28 and 154,813.22

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Solution

The fourth proportional to 245,398.76, 338,648.28 and 154,813.22 is: 213,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,398.76 : 338,648.28 = 154,813.22 : x
  2. Step 2: Convert to fraction form
    245,398.76/338,648.28 = 154,813.22/x
  3. Step 3: Cross multiply
    245,398.76x = 338,648.28 × 154,813.22
  4. Step 4: Simplify right side
    245,398.76x = 52,427,230,674.26
  5. Step 5: Solve for x
    x = 52,427,230,674.26/245,398.76
  6. Step 6: Final answer
    x = 213,640.98

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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.