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Finding the Fourth Proportional to 252,313.20, 378,469.80 and 242,636.40

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Solution

The fourth proportional to 252,313.20, 378,469.80 and 242,636.40 is: 363,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,313.20 : 378,469.80 = 242,636.40 : x
  2. Step 2: Convert to fraction form
    252,313.20/378,469.80 = 242,636.40/x
  3. Step 3: Cross multiply
    252,313.20x = 378,469.80 × 242,636.40
  4. Step 4: Simplify right side
    252,313.20x = 91,830,549,780.72
  5. Step 5: Solve for x
    x = 91,830,549,780.72/252,313.20
  6. Step 6: Final answer
    x = 363,954.60

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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.