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Finding the Fourth Proportional to 391,522.88, 540,292.32 and 228,168.88

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Solution

The fourth proportional to 391,522.88, 540,292.32 and 228,168.88 is: 314,867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,522.88 : 540,292.32 = 228,168.88 : x
  2. Step 2: Convert to fraction form
    391,522.88/540,292.32 = 228,168.88/x
  3. Step 3: Cross multiply
    391,522.88x = 540,292.32 × 228,168.88
  4. Step 4: Simplify right side
    391,522.88x = 123,277,893,527.00
  5. Step 5: Solve for x
    x = 123,277,893,527.00/391,522.88
  6. Step 6: Final answer
    x = 314,867.66

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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.