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Finding the Fourth Proportional to 265,319.20, 397,978.80 and 181,338.40

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Solution

The fourth proportional to 265,319.20, 397,978.80 and 181,338.40 is: 272,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,319.20 : 397,978.80 = 181,338.40 : x
  2. Step 2: Convert to fraction form
    265,319.20/397,978.80 = 181,338.40/x
  3. Step 3: Cross multiply
    265,319.20x = 397,978.80 × 181,338.40
  4. Step 4: Simplify right side
    265,319.20x = 72,168,838,825.92
  5. Step 5: Solve for x
    x = 72,168,838,825.92/265,319.20
  6. Step 6: Final answer
    x = 272,007.60

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Similar ratio
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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.