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Finding the Fourth Proportional to 256,484.67, 384,733.53 and 121,517.10

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Solution

The fourth proportional to 256,484.67, 384,733.53 and 121,517.10 is: 182,278.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,484.67 : 384,733.53 = 121,517.10 : x
  2. Step 2: Convert to fraction form
    256,484.67/384,733.53 = 121,517.10/x
  3. Step 3: Cross multiply
    256,484.67x = 384,733.53 × 121,517.10
  4. Step 4: Simplify right side
    256,484.67x = 46,751,702,838.36
  5. Step 5: Solve for x
    x = 46,751,702,838.36/256,484.67
  6. Step 6: Final answer
    x = 182,278.74

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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.