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Finding the Fourth Proportional to 352,850.40, 530,312.40 and 307,231.20

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Solution

The fourth proportional to 352,850.40, 530,312.40 and 307,231.20 is: 461,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,850.40 : 530,312.40 = 307,231.20 : x
  2. Step 2: Convert to fraction form
    352,850.40/530,312.40 = 307,231.20/x
  3. Step 3: Cross multiply
    352,850.40x = 530,312.40 × 307,231.20
  4. Step 4: Simplify right side
    352,850.40x = 162,928,515,026.88
  5. Step 5: Solve for x
    x = 162,928,515,026.88/352,850.40
  6. Step 6: Final answer
    x = 461,749.55

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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.