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Finding the Fourth Proportional to 385,558.26, 532,376.37 and 256,620.66

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Solution

The fourth proportional to 385,558.26, 532,376.37 and 256,620.66 is: 354,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,558.26 : 532,376.37 = 256,620.66 : x
  2. Step 2: Convert to fraction form
    385,558.26/532,376.37 = 256,620.66/x
  3. Step 3: Cross multiply
    385,558.26x = 532,376.37 × 256,620.66
  4. Step 4: Simplify right side
    385,558.26x = 136,618,775,437.80
  5. Step 5: Solve for x
    x = 136,618,775,437.80/385,558.26
  6. Step 6: Final answer
    x = 354,340.16

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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.