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Finding the Fourth Proportional to 434,111.80, 650,130.90 and 266,150.20

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Solution

The fourth proportional to 434,111.80, 650,130.90 and 266,150.20 is: 398,589.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,111.80 : 650,130.90 = 266,150.20 : x
  2. Step 2: Convert to fraction form
    434,111.80/650,130.90 = 266,150.20/x
  3. Step 3: Cross multiply
    434,111.80x = 650,130.90 × 266,150.20
  4. Step 4: Simplify right side
    434,111.80x = 173,032,469,061.18
  5. Step 5: Solve for x
    x = 173,032,469,061.18/434,111.80
  6. Step 6: Final answer
    x = 398,589.65

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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.