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Finding the Fourth Proportional to 381,465.79, 526,388.01 and 226,390.33

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Solution

The fourth proportional to 381,465.79, 526,388.01 and 226,390.33 is: 312,398.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,465.79 : 526,388.01 = 226,390.33 : x
  2. Step 2: Convert to fraction form
    381,465.79/526,388.01 = 226,390.33/x
  3. Step 3: Cross multiply
    381,465.79x = 526,388.01 × 226,390.33
  4. Step 4: Simplify right side
    381,465.79x = 119,169,155,291.94
  5. Step 5: Solve for x
    x = 119,169,155,291.94/381,465.79
  6. Step 6: Final answer
    x = 312,398.01

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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.