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Finding the Fourth Proportional to 320,428.30, 480,066.45 and 153,849.10

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Solution

The fourth proportional to 320,428.30, 480,066.45 and 153,849.10 is: 230,497.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,428.30 : 480,066.45 = 153,849.10 : x
  2. Step 2: Convert to fraction form
    320,428.30/480,066.45 = 153,849.10/x
  3. Step 3: Cross multiply
    320,428.30x = 480,066.45 × 153,849.10
  4. Step 4: Simplify right side
    320,428.30x = 73,857,791,272.70
  5. Step 5: Solve for x
    x = 73,857,791,272.70/320,428.30
  6. Step 6: Final answer
    x = 230,497.09

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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.