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Finding the Fourth Proportional to 300,321.70, 450,349.71 and 89,920.42

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Solution

The fourth proportional to 300,321.70, 450,349.71 and 89,920.42 is: 134,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,321.70 : 450,349.71 = 89,920.42 : x
  2. Step 2: Convert to fraction form
    300,321.70/450,349.71 = 89,920.42/x
  3. Step 3: Cross multiply
    300,321.70x = 450,349.71 × 89,920.42
  4. Step 4: Simplify right side
    300,321.70x = 40,495,635,070.08
  5. Step 5: Solve for x
    x = 40,495,635,070.08/300,321.70
  6. Step 6: Final answer
    x = 134,840.86

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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.