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Finding the Fourth Proportional to 342,666, 472,813.47 and 221,790.51

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Solution

The fourth proportional to 342,666, 472,813.47 and 221,790.51 is: 306,028.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,666 : 472,813.47 = 221,790.51 : x
  2. Step 2: Convert to fraction form
    342,666/472,813.47 = 221,790.51/x
  3. Step 3: Cross multiply
    342,666x = 472,813.47 × 221,790.51
  4. Step 4: Simplify right side
    342,666x = 104,865,540,646.17
  5. Step 5: Solve for x
    x = 104,865,540,646.17/342,666
  6. Step 6: Final answer
    x = 306,028.44

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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.