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Finding the Fourth Proportional to 300,341.52, 450,511.92 and 138,219.24

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Solution

The fourth proportional to 300,341.52, 450,511.92 and 138,219.24 is: 207,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,341.52 : 450,511.92 = 138,219.24 : x
  2. Step 2: Convert to fraction form
    300,341.52/450,511.92 = 138,219.24/x
  3. Step 3: Cross multiply
    300,341.52x = 450,511.92 × 138,219.24
  4. Step 4: Simplify right side
    300,341.52x = 62,269,415,193.34
  5. Step 5: Solve for x
    x = 62,269,415,193.34/300,341.52
  6. Step 6: Final answer
    x = 207,328.69

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1.5x scale

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.