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Finding the Fourth Proportional to 266,404.55, 399,262.37 and 199,318.32

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Solution

The fourth proportional to 266,404.55, 399,262.37 and 199,318.32 is: 298,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,404.55 : 399,262.37 = 199,318.32 : x
  2. Step 2: Convert to fraction form
    266,404.55/399,262.37 = 199,318.32/x
  3. Step 3: Cross multiply
    266,404.55x = 399,262.37 × 199,318.32
  4. Step 4: Simplify right side
    266,404.55x = 79,580,303,831.03
  5. Step 5: Solve for x
    x = 79,580,303,831.03/266,404.55
  6. Step 6: Final answer
    x = 298,719.77

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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.