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Finding the Fourth Proportional to 398,724.96, 550,240.02 and 217,437.24

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Solution

The fourth proportional to 398,724.96, 550,240.02 and 217,437.24 is: 300,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,724.96 : 550,240.02 = 217,437.24 : x
  2. Step 2: Convert to fraction form
    398,724.96/550,240.02 = 217,437.24/x
  3. Step 3: Cross multiply
    398,724.96x = 550,240.02 × 217,437.24
  4. Step 4: Simplify right side
    398,724.96x = 119,642,671,286.35
  5. Step 5: Solve for x
    x = 119,642,671,286.35/398,724.96
  6. Step 6: Final answer
    x = 300,063.16

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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.