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Finding the Fourth Proportional to 272,293.60, 408,440.40 and 260,046.40

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Solution

The fourth proportional to 272,293.60, 408,440.40 and 260,046.40 is: 390,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,293.60 : 408,440.40 = 260,046.40 : x
  2. Step 2: Convert to fraction form
    272,293.60/408,440.40 = 260,046.40/x
  3. Step 3: Cross multiply
    272,293.60x = 408,440.40 × 260,046.40
  4. Step 4: Simplify right side
    272,293.60x = 106,213,455,634.56
  5. Step 5: Solve for x
    x = 106,213,455,634.56/272,293.60
  6. Step 6: Final answer
    x = 390,069.60

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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.