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Finding the Fourth Proportional to 266,260.40, 399,390.60 and 141,844.40

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Solution

The fourth proportional to 266,260.40, 399,390.60 and 141,844.40 is: 212,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,260.40 : 399,390.60 = 141,844.40 : x
  2. Step 2: Convert to fraction form
    266,260.40/399,390.60 = 141,844.40/x
  3. Step 3: Cross multiply
    266,260.40x = 399,390.60 × 141,844.40
  4. Step 4: Simplify right side
    266,260.40x = 56,651,320,022.64
  5. Step 5: Solve for x
    x = 56,651,320,022.64/266,260.40
  6. Step 6: Final answer
    x = 212,766.60

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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.