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Finding the Fourth Proportional to 266,246.37, 399,486.24 and 139,857.30

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Solution

The fourth proportional to 266,246.37, 399,486.24 and 139,857.30 is: 209,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,246.37 : 399,486.24 = 139,857.30 : x
  2. Step 2: Convert to fraction form
    266,246.37/399,486.24 = 139,857.30/x
  3. Step 3: Cross multiply
    266,246.37x = 399,486.24 × 139,857.30
  4. Step 4: Simplify right side
    266,246.37x = 55,871,066,913.55
  5. Step 5: Solve for x
    x = 55,871,066,913.55/266,246.37
  6. Step 6: Final answer
    x = 209,847.24

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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.