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Finding the Fourth Proportional to 261,799.20, 392,698.80 and 242,553.60

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Solution

The fourth proportional to 261,799.20, 392,698.80 and 242,553.60 is: 363,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,799.20 : 392,698.80 = 242,553.60 : x
  2. Step 2: Convert to fraction form
    261,799.20/392,698.80 = 242,553.60/x
  3. Step 3: Cross multiply
    261,799.20x = 392,698.80 × 242,553.60
  4. Step 4: Simplify right side
    261,799.20x = 95,250,507,655.68
  5. Step 5: Solve for x
    x = 95,250,507,655.68/261,799.20
  6. Step 6: Final answer
    x = 363,830.40

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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.