Home / 256,246.85-384,407.02-78,768.76

Finding the Fourth Proportional to 256,246.85, 384,407.02 and 78,768.76

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Solution

The fourth proportional to 256,246.85, 384,407.02 and 78,768.76 is: 118,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,246.85 : 384,407.02 = 78,768.76 : x
  2. Step 2: Convert to fraction form
    256,246.85/384,407.02 = 78,768.76/x
  3. Step 3: Cross multiply
    256,246.85x = 384,407.02 × 78,768.76
  4. Step 4: Simplify right side
    256,246.85x = 30,279,263,438.14
  5. Step 5: Solve for x
    x = 30,279,263,438.14/256,246.85
  6. Step 6: Final answer
    x = 118,164.43

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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.