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Finding the Fourth Proportional to 300,307.52, 450,531.34 and 87,079.88

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Solution

The fourth proportional to 300,307.52, 450,531.34 and 87,079.88 is: 130,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,307.52 : 450,531.34 = 87,079.88 : x
  2. Step 2: Convert to fraction form
    300,307.52/450,531.34 = 87,079.88/x
  3. Step 3: Cross multiply
    300,307.52x = 450,531.34 × 87,079.88
  4. Step 4: Simplify right side
    300,307.52x = 39,232,215,023.44
  5. Step 5: Solve for x
    x = 39,232,215,023.44/300,307.52
  6. Step 6: Final answer
    x = 130,640.14

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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.