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Finding the Fourth Proportional to 300,528.43, 450,688.85 and 87,238.52

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Solution

The fourth proportional to 300,528.43, 450,688.85 and 87,238.52 is: 130,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,528.43 : 450,688.85 = 87,238.52 : x
  2. Step 2: Convert to fraction form
    300,528.43/450,688.85 = 87,238.52/x
  3. Step 3: Cross multiply
    300,528.43x = 450,688.85 × 87,238.52
  4. Step 4: Simplify right side
    300,528.43x = 39,317,428,945.03
  5. Step 5: Solve for x
    x = 39,317,428,945.03/300,528.43
  6. Step 6: Final answer
    x = 130,827.65

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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.