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Finding the Fourth Proportional to 252,311.20, 378,466.80 and 242,634.40

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Solution

The fourth proportional to 252,311.20, 378,466.80 and 242,634.40 is: 363,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,311.20 : 378,466.80 = 242,634.40 : x
  2. Step 2: Convert to fraction form
    252,311.20/378,466.80 = 242,634.40/x
  3. Step 3: Cross multiply
    252,311.20x = 378,466.80 × 242,634.40
  4. Step 4: Simplify right side
    252,311.20x = 91,829,064,937.92
  5. Step 5: Solve for x
    x = 91,829,064,937.92/252,311.20
  6. Step 6: Final answer
    x = 363,951.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.