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Finding the Fourth Proportional to 280,029.76, 420,043.93 and 223,605.56

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Solution

The fourth proportional to 280,029.76, 420,043.93 and 223,605.56 is: 335,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,029.76 : 420,043.93 = 223,605.56 : x
  2. Step 2: Convert to fraction form
    280,029.76/420,043.93 = 223,605.56/x
  3. Step 3: Cross multiply
    280,029.76x = 420,043.93 × 223,605.56
  4. Step 4: Simplify right side
    280,029.76x = 93,924,158,683.35
  5. Step 5: Solve for x
    x = 93,924,158,683.35/280,029.76
  6. Step 6: Final answer
    x = 335,407.78

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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.