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Finding the Fourth Proportional to 428,118.75, 590,803.88 and 237,144.47

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Solution

The fourth proportional to 428,118.75, 590,803.88 and 237,144.47 is: 327,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,118.75 : 590,803.88 = 237,144.47 : x
  2. Step 2: Convert to fraction form
    428,118.75/590,803.88 = 237,144.47/x
  3. Step 3: Cross multiply
    428,118.75x = 590,803.88 × 237,144.47
  4. Step 4: Simplify right side
    428,118.75x = 140,105,868,856.80
  5. Step 5: Solve for x
    x = 140,105,868,856.80/428,118.75
  6. Step 6: Final answer
    x = 327,259.36

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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.