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Finding the Fourth Proportional to 320,851.40, 481,277.10 and 303,744.20

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Solution

The fourth proportional to 320,851.40, 481,277.10 and 303,744.20 is: 455,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,851.40 : 481,277.10 = 303,744.20 : x
  2. Step 2: Convert to fraction form
    320,851.40/481,277.10 = 303,744.20/x
  3. Step 3: Cross multiply
    320,851.40x = 481,277.10 × 303,744.20
  4. Step 4: Simplify right side
    320,851.40x = 146,185,127,717.82
  5. Step 5: Solve for x
    x = 146,185,127,717.82/320,851.40
  6. Step 6: Final answer
    x = 455,616.30

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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.