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Finding the Fourth Proportional to 438,969.40, 658,454.10 and 262,022.20

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Solution

The fourth proportional to 438,969.40, 658,454.10 and 262,022.20 is: 393,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,969.40 : 658,454.10 = 262,022.20 : x
  2. Step 2: Convert to fraction form
    438,969.40/658,454.10 = 262,022.20/x
  3. Step 3: Cross multiply
    438,969.40x = 658,454.10 × 262,022.20
  4. Step 4: Simplify right side
    438,969.40x = 172,529,591,881.02
  5. Step 5: Solve for x
    x = 172,529,591,881.02/438,969.40
  6. Step 6: Final answer
    x = 393,033.30

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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.