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Finding the Fourth Proportional to 266,090.09, 399,252.06 and 139,700.97

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Solution

The fourth proportional to 266,090.09, 399,252.06 and 139,700.97 is: 209,612.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,090.09 : 399,252.06 = 139,700.97 : x
  2. Step 2: Convert to fraction form
    266,090.09/399,252.06 = 139,700.97/x
  3. Step 3: Cross multiply
    266,090.09x = 399,252.06 × 139,700.97
  4. Step 4: Simplify right side
    266,090.09x = 55,775,900,056.50
  5. Step 5: Solve for x
    x = 55,775,900,056.50/266,090.09
  6. Step 6: Final answer
    x = 209,612.84

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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.