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Finding the Fourth Proportional to 306,549.90, 423,048.62 and 191,791.73

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Solution

The fourth proportional to 306,549.90, 423,048.62 and 191,791.73 is: 264,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,549.90 : 423,048.62 = 191,791.73 : x
  2. Step 2: Convert to fraction form
    306,549.90/423,048.62 = 191,791.73/x
  3. Step 3: Cross multiply
    306,549.90x = 423,048.62 × 191,791.73
  4. Step 4: Simplify right side
    306,549.90x = 81,137,228,241.01
  5. Step 5: Solve for x
    x = 81,137,228,241.01/306,549.90
  6. Step 6: Final answer
    x = 264,678.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.