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Finding the Fourth Proportional to 402,648.60, 603,972.90 and 269,938.20

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Solution

The fourth proportional to 402,648.60, 603,972.90 and 269,938.20 is: 404,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,648.60 : 603,972.90 = 269,938.20 : x
  2. Step 2: Convert to fraction form
    402,648.60/603,972.90 = 269,938.20/x
  3. Step 3: Cross multiply
    402,648.60x = 603,972.90 × 269,938.20
  4. Step 4: Simplify right side
    402,648.60x = 163,035,357,474.78
  5. Step 5: Solve for x
    x = 163,035,357,474.78/402,648.60
  6. Step 6: Final answer
    x = 404,907.30

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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.