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Finding the Fourth Proportional to 342,670, 472,818.99 and 221,794.51

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Solution

The fourth proportional to 342,670, 472,818.99 and 221,794.51 is: 306,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,670 : 472,818.99 = 221,794.51 : x
  2. Step 2: Convert to fraction form
    342,670/472,818.99 = 221,794.51/x
  3. Step 3: Cross multiply
    342,670x = 472,818.99 × 221,794.51
  4. Step 4: Simplify right side
    342,670x = 104,868,656,205.75
  5. Step 5: Solve for x
    x = 104,868,656,205.75/342,670
  6. Step 6: Final answer
    x = 306,033.96

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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.