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Finding the Fourth Proportional to 280,848.60, 421,272.90 and 280,848.60

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Solution

The fourth proportional to 280,848.60, 421,272.90 and 280,848.60 is: 421,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,848.60 : 421,272.90 = 280,848.60 : x
  2. Step 2: Convert to fraction form
    280,848.60/421,272.90 = 280,848.60/x
  3. Step 3: Cross multiply
    280,848.60x = 421,272.90 × 280,848.60
  4. Step 4: Simplify right side
    280,848.60x = 118,313,904,182.94
  5. Step 5: Solve for x
    x = 118,313,904,182.94/280,848.60
  6. Step 6: Final answer
    x = 421,272.90

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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.