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Finding the Fourth Proportional to 300,533.17, 450,695.98 and 87,243.27

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Solution

The fourth proportional to 300,533.17, 450,695.98 and 87,243.27 is: 130,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,533.17 : 450,695.98 = 87,243.27 : x
  2. Step 2: Convert to fraction form
    300,533.17/450,695.98 = 87,243.27/x
  3. Step 3: Cross multiply
    300,533.17x = 450,695.98 × 87,243.27
  4. Step 4: Simplify right side
    300,533.17x = 39,320,191,071.05
  5. Step 5: Solve for x
    x = 39,320,191,071.05/300,533.17
  6. Step 6: Final answer
    x = 130,834.78

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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.