Home / 428,331.74-591,097.60-256,256.98

Finding the Fourth Proportional to 428,331.74, 591,097.60 and 256,256.98

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Solution

The fourth proportional to 428,331.74, 591,097.60 and 256,256.98 is: 353,634.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,331.74 : 591,097.60 = 256,256.98 : x
  2. Step 2: Convert to fraction form
    428,331.74/591,097.60 = 256,256.98/x
  3. Step 3: Cross multiply
    428,331.74x = 591,097.60 × 256,256.98
  4. Step 4: Simplify right side
    428,331.74x = 151,472,885,861.25
  5. Step 5: Solve for x
    x = 151,472,885,861.25/428,331.74
  6. Step 6: Final answer
    x = 353,634.51

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1.5x scale

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.