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Finding the Fourth Proportional to 402,414.20, 603,621.30 and 202,657.40

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Solution

The fourth proportional to 402,414.20, 603,621.30 and 202,657.40 is: 303,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,414.20 : 603,621.30 = 202,657.40 : x
  2. Step 2: Convert to fraction form
    402,414.20/603,621.30 = 202,657.40/x
  3. Step 3: Cross multiply
    402,414.20x = 603,621.30 × 202,657.40
  4. Step 4: Simplify right side
    402,414.20x = 122,328,323,242.62
  5. Step 5: Solve for x
    x = 122,328,323,242.62/402,414.20
  6. Step 6: Final answer
    x = 303,986.10

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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.