Home / 397,145.90-548,066.88-215,857.77

Finding the Fourth Proportional to 397,145.90, 548,066.88 and 215,857.77

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Solution

The fourth proportional to 397,145.90, 548,066.88 and 215,857.77 is: 297,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,145.90 : 548,066.88 = 215,857.77 : x
  2. Step 2: Convert to fraction form
    397,145.90/548,066.88 = 215,857.77/x
  3. Step 3: Cross multiply
    397,145.90x = 548,066.88 × 215,857.77
  4. Step 4: Simplify right side
    397,145.90x = 118,304,494,527.66
  5. Step 5: Solve for x
    x = 118,304,494,527.66/397,145.90
  6. Step 6: Final answer
    x = 297,886.74

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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.