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Finding the Fourth Proportional to 280,907.56, 421,359.72 and 93,917.44

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Solution

The fourth proportional to 280,907.56, 421,359.72 and 93,917.44 is: 140,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,907.56 : 421,359.72 = 93,917.44 : x
  2. Step 2: Convert to fraction form
    280,907.56/421,359.72 = 93,917.44/x
  3. Step 3: Cross multiply
    280,907.56x = 421,359.72 × 93,917.44
  4. Step 4: Simplify right side
    280,907.56x = 39,573,026,221.52
  5. Step 5: Solve for x
    x = 39,573,026,221.52/280,907.56
  6. Step 6: Final answer
    x = 140,875.62

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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.