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Finding the Fourth Proportional to 321,130.24, 481,710.72 and 155,057.92

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Solution

The fourth proportional to 321,130.24, 481,710.72 and 155,057.92 is: 232,594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,130.24 : 481,710.72 = 155,057.92 : x
  2. Step 2: Convert to fraction form
    321,130.24/481,710.72 = 155,057.92/x
  3. Step 3: Cross multiply
    321,130.24x = 481,710.72 × 155,057.92
  4. Step 4: Simplify right side
    321,130.24x = 74,693,062,284.90
  5. Step 5: Solve for x
    x = 74,693,062,284.90/321,130.24
  6. Step 6: Final answer
    x = 232,594.30

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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.