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Finding the Fourth Proportional to 381,898.50, 526,585.12 and 243,891.51

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Solution

The fourth proportional to 381,898.50, 526,585.12 and 243,891.51 is: 336,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,898.50 : 526,585.12 = 243,891.51 : x
  2. Step 2: Convert to fraction form
    381,898.50/526,585.12 = 243,891.51/x
  3. Step 3: Cross multiply
    381,898.50x = 526,585.12 × 243,891.51
  4. Step 4: Simplify right side
    381,898.50x = 128,429,640,060.33
  5. Step 5: Solve for x
    x = 128,429,640,060.33/381,898.50
  6. Step 6: Final answer
    x = 336,292.60

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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.