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Finding the Fourth Proportional to 320,463.01, 480,693.91 and 120,828.18

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Solution

The fourth proportional to 320,463.01, 480,693.91 and 120,828.18 is: 181,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,463.01 : 480,693.91 = 120,828.18 : x
  2. Step 2: Convert to fraction form
    320,463.01/480,693.91 = 120,828.18/x
  3. Step 3: Cross multiply
    320,463.01x = 480,693.91 × 120,828.18
  4. Step 4: Simplify right side
    320,463.01x = 58,081,370,282.38
  5. Step 5: Solve for x
    x = 58,081,370,282.38/320,463.01
  6. Step 6: Final answer
    x = 181,242.04

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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.