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Finding the Fourth Proportional to 256,365.32, 383,790.70 and 189,360.52

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Solution

The fourth proportional to 256,365.32, 383,790.70 and 189,360.52 is: 283,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,365.32 : 383,790.70 = 189,360.52 : x
  2. Step 2: Convert to fraction form
    256,365.32/383,790.70 = 189,360.52/x
  3. Step 3: Cross multiply
    256,365.32x = 383,790.70 × 189,360.52
  4. Step 4: Simplify right side
    256,365.32x = 72,674,806,523.16
  5. Step 5: Solve for x
    x = 72,674,806,523.16/256,365.32
  6. Step 6: Final answer
    x = 283,481.43

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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.