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Finding the Fourth Proportional to 256,479.26, 384,718.88 and 69,490.76

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Solution

The fourth proportional to 256,479.26, 384,718.88 and 69,490.76 is: 104,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,479.26 : 384,718.88 = 69,490.76 : x
  2. Step 2: Convert to fraction form
    256,479.26/384,718.88 = 69,490.76/x
  3. Step 3: Cross multiply
    256,479.26x = 384,718.88 × 69,490.76
  4. Step 4: Simplify right side
    256,479.26x = 26,734,405,607.68
  5. Step 5: Solve for x
    x = 26,734,405,607.68/256,479.26
  6. Step 6: Final answer
    x = 104,236.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.