Home / 397,146.13-548,065.32-215,858.47

Finding the Fourth Proportional to 397,146.13, 548,065.32 and 215,858.47

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Solution

The fourth proportional to 397,146.13, 548,065.32 and 215,858.47 is: 297,886.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,146.13 : 548,065.32 = 215,858.47 : x
  2. Step 2: Convert to fraction form
    397,146.13/548,065.32 = 215,858.47/x
  3. Step 3: Cross multiply
    397,146.13x = 548,065.32 × 215,858.47
  4. Step 4: Simplify right side
    397,146.13x = 118,304,541,435.26
  5. Step 5: Solve for x
    x = 118,304,541,435.26/397,146.13
  6. Step 6: Final answer
    x = 297,886.68

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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.