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Finding the Fourth Proportional to 378,833.34, 522,802.22 and 215,485.62

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Solution

The fourth proportional to 378,833.34, 522,802.22 and 215,485.62 is: 297,377.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,833.34 : 522,802.22 = 215,485.62 : x
  2. Step 2: Convert to fraction form
    378,833.34/522,802.22 = 215,485.62/x
  3. Step 3: Cross multiply
    378,833.34x = 522,802.22 × 215,485.62
  4. Step 4: Simplify right side
    378,833.34x = 112,656,359,436.65
  5. Step 5: Solve for x
    x = 112,656,359,436.65/378,833.34
  6. Step 6: Final answer
    x = 297,377.10

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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.