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Finding the Fourth Proportional to 280,508.40, 421,799.40 and 234,889.20

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Solution

The fourth proportional to 280,508.40, 421,799.40 and 234,889.20 is: 353,201.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,508.40 : 421,799.40 = 234,889.20 : x
  2. Step 2: Convert to fraction form
    280,508.40/421,799.40 = 234,889.20/x
  3. Step 3: Cross multiply
    280,508.40x = 421,799.40 × 234,889.20
  4. Step 4: Simplify right side
    280,508.40x = 99,076,123,626.48
  5. Step 5: Solve for x
    x = 99,076,123,626.48/280,508.40
  6. Step 6: Final answer
    x = 353,201.98

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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.