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Finding the Fourth Proportional to 397,320.80, 548,287.59 and 216,032.88

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Solution

The fourth proportional to 397,320.80, 548,287.59 and 216,032.88 is: 298,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,320.80 : 548,287.59 = 216,032.88 : x
  2. Step 2: Convert to fraction form
    397,320.80/548,287.59 = 216,032.88/x
  3. Step 3: Cross multiply
    397,320.80x = 548,287.59 × 216,032.88
  4. Step 4: Simplify right side
    397,320.80x = 118,448,147,135.96
  5. Step 5: Solve for x
    x = 118,448,147,135.96/397,320.80
  6. Step 6: Final answer
    x = 298,117.16

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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.