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Finding the Fourth Proportional to 397,718.48, 548,853.84 and 216,431.84

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Solution

The fourth proportional to 397,718.48, 548,853.84 and 216,431.84 is: 298,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,718.48 : 548,853.84 = 216,431.84 : x
  2. Step 2: Convert to fraction form
    397,718.48/548,853.84 = 216,431.84/x
  3. Step 3: Cross multiply
    397,718.48x = 548,853.84 × 216,431.84
  4. Step 4: Simplify right side
    397,718.48x = 118,789,446,482.27
  5. Step 5: Solve for x
    x = 118,789,446,482.27/397,718.48
  6. Step 6: Final answer
    x = 298,677.21

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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.