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Finding the Fourth Proportional to 342,669.69, 472,818.55 and 221,794.20

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Solution

The fourth proportional to 342,669.69, 472,818.55 and 221,794.20 is: 306,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,669.69 : 472,818.55 = 221,794.20 : x
  2. Step 2: Convert to fraction form
    342,669.69/472,818.55 = 221,794.20/x
  3. Step 3: Cross multiply
    342,669.69x = 472,818.55 × 221,794.20
  4. Step 4: Simplify right side
    342,669.69x = 104,868,412,042.41
  5. Step 5: Solve for x
    x = 104,868,412,042.41/342,669.69
  6. Step 6: Final answer
    x = 306,033.52

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1.5x scale

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.