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Finding the Fourth Proportional to 320,762.25, 481,143.38 and 99,146.25

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Solution

The fourth proportional to 320,762.25, 481,143.38 and 99,146.25 is: 148,719.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,762.25 : 481,143.38 = 99,146.25 : x
  2. Step 2: Convert to fraction form
    320,762.25/481,143.38 = 99,146.25/x
  3. Step 3: Cross multiply
    320,762.25x = 481,143.38 × 99,146.25
  4. Step 4: Simplify right side
    320,762.25x = 47,703,561,343.59
  5. Step 5: Solve for x
    x = 47,703,561,343.59/320,762.25
  6. Step 6: Final answer
    x = 148,719.38

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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.