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Finding the Fourth Proportional to 261,809.20, 392,713.80 and 242,563.60

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Solution

The fourth proportional to 261,809.20, 392,713.80 and 242,563.60 is: 363,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,809.20 : 392,713.80 = 242,563.60 : x
  2. Step 2: Convert to fraction form
    261,809.20/392,713.80 = 242,563.60/x
  3. Step 3: Cross multiply
    261,809.20x = 392,713.80 × 242,563.60
  4. Step 4: Simplify right side
    261,809.20x = 95,258,073,097.68
  5. Step 5: Solve for x
    x = 95,258,073,097.68/261,809.20
  6. Step 6: Final answer
    x = 363,845.40

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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.