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Finding the Fourth Proportional to 353,903.20, 530,077.20 and 307,247.20

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Solution

The fourth proportional to 353,903.20, 530,077.20 and 307,247.20 is: 460,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,903.20 : 530,077.20 = 307,247.20 : x
  2. Step 2: Convert to fraction form
    353,903.20/530,077.20 = 307,247.20/x
  3. Step 3: Cross multiply
    353,903.20x = 530,077.20 × 307,247.20
  4. Step 4: Simplify right side
    353,903.20x = 162,864,735,483.84
  5. Step 5: Solve for x
    x = 162,864,735,483.84/353,903.20
  6. Step 6: Final answer
    x = 460,195.71

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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.