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Finding the Fourth Proportional to 266,021.40, 399,032.10 and 166,294.20

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Solution

The fourth proportional to 266,021.40, 399,032.10 and 166,294.20 is: 249,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,021.40 : 399,032.10 = 166,294.20 : x
  2. Step 2: Convert to fraction form
    266,021.40/399,032.10 = 166,294.20/x
  3. Step 3: Cross multiply
    266,021.40x = 399,032.10 × 166,294.20
  4. Step 4: Simplify right side
    266,021.40x = 66,356,723,843.82
  5. Step 5: Solve for x
    x = 66,356,723,843.82/266,021.40
  6. Step 6: Final answer
    x = 249,441.30

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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.