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Finding the Fourth Proportional to 265,910.40, 398,865.60 and 242,582.40

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Solution

The fourth proportional to 265,910.40, 398,865.60 and 242,582.40 is: 363,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,910.40 : 398,865.60 = 242,582.40 : x
  2. Step 2: Convert to fraction form
    265,910.40/398,865.60 = 242,582.40/x
  3. Step 3: Cross multiply
    265,910.40x = 398,865.60 × 242,582.40
  4. Step 4: Simplify right side
    265,910.40x = 96,757,774,525.44
  5. Step 5: Solve for x
    x = 96,757,774,525.44/265,910.40
  6. Step 6: Final answer
    x = 363,873.60

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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.