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Finding the Fourth Proportional to 272,652.60, 408,978.90 and 242,585.40

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Solution

The fourth proportional to 272,652.60, 408,978.90 and 242,585.40 is: 363,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,652.60 : 408,978.90 = 242,585.40 : x
  2. Step 2: Convert to fraction form
    272,652.60/408,978.90 = 242,585.40/x
  3. Step 3: Cross multiply
    272,652.60x = 408,978.90 × 242,585.40
  4. Step 4: Simplify right side
    272,652.60x = 99,212,310,048.06
  5. Step 5: Solve for x
    x = 99,212,310,048.06/272,652.60
  6. Step 6: Final answer
    x = 363,878.10

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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.