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Finding the Fourth Proportional to 381,912.29, 526,606.52 and 243,909.84

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Solution

The fourth proportional to 381,912.29, 526,606.52 and 243,909.84 is: 336,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,912.29 : 526,606.52 = 243,909.84 : x
  2. Step 2: Convert to fraction form
    381,912.29/526,606.52 = 243,909.84/x
  3. Step 3: Cross multiply
    381,912.29x = 526,606.52 × 243,909.84
  4. Step 4: Simplify right side
    381,912.29x = 128,444,510,816.61
  5. Step 5: Solve for x
    x = 128,444,510,816.61/381,912.29
  6. Step 6: Final answer
    x = 336,319.40

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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.