Home / 428,330.74-591,096.22-256,255.98

Finding the Fourth Proportional to 428,330.74, 591,096.22 and 256,255.98

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Solution

The fourth proportional to 428,330.74, 591,096.22 and 256,255.98 is: 353,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,330.74 : 591,096.22 = 256,255.98 : x
  2. Step 2: Convert to fraction form
    428,330.74/591,096.22 = 256,255.98/x
  3. Step 3: Cross multiply
    428,330.74x = 591,096.22 × 256,255.98
  4. Step 4: Simplify right side
    428,330.74x = 151,471,941,130.40
  5. Step 5: Solve for x
    x = 151,471,941,130.40/428,330.74
  6. Step 6: Final answer
    x = 353,633.13

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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.