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Finding the Fourth Proportional to 394,279.17, 543,915.58 and 258,254.25

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Solution

The fourth proportional to 394,279.17, 543,915.58 and 258,254.25 is: 356,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,279.17 : 543,915.58 = 258,254.25 : x
  2. Step 2: Convert to fraction form
    394,279.17/543,915.58 = 258,254.25/x
  3. Step 3: Cross multiply
    394,279.17x = 543,915.58 × 258,254.25
  4. Step 4: Simplify right side
    394,279.17x = 140,468,510,176.22
  5. Step 5: Solve for x
    x = 140,468,510,176.22/394,279.17
  6. Step 6: Final answer
    x = 356,266.63

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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.