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Finding the Fourth Proportional to 266,442.80, 399,664.20 and 264,887.60

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Solution

The fourth proportional to 266,442.80, 399,664.20 and 264,887.60 is: 397,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,442.80 : 399,664.20 = 264,887.60 : x
  2. Step 2: Convert to fraction form
    266,442.80/399,664.20 = 264,887.60/x
  3. Step 3: Cross multiply
    266,442.80x = 399,664.20 × 264,887.60
  4. Step 4: Simplify right side
    266,442.80x = 105,866,090,743.92
  5. Step 5: Solve for x
    x = 105,866,090,743.92/266,442.80
  6. Step 6: Final answer
    x = 397,331.40

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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.