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Finding the Fourth Proportional to 387,164.40, 534,270.36 and 226,028.40

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Solution

The fourth proportional to 387,164.40, 534,270.36 and 226,028.40 is: 311,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,164.40 : 534,270.36 = 226,028.40 : x
  2. Step 2: Convert to fraction form
    387,164.40/534,270.36 = 226,028.40/x
  3. Step 3: Cross multiply
    387,164.40x = 534,270.36 × 226,028.40
  4. Step 4: Simplify right side
    387,164.40x = 120,760,274,638.22
  5. Step 5: Solve for x
    x = 120,760,274,638.22/387,164.40
  6. Step 6: Final answer
    x = 311,909.55

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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.