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Finding the Fourth Proportional to 309,153.62, 426,624.54 and 173,193.30

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Solution

The fourth proportional to 309,153.62, 426,624.54 and 173,193.30 is: 239,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,153.62 : 426,624.54 = 173,193.30 : x
  2. Step 2: Convert to fraction form
    309,153.62/426,624.54 = 173,193.30/x
  3. Step 3: Cross multiply
    309,153.62x = 426,624.54 × 173,193.30
  4. Step 4: Simplify right side
    309,153.62x = 73,888,511,943.58
  5. Step 5: Solve for x
    x = 73,888,511,943.58/309,153.62
  6. Step 6: Final answer
    x = 239,002.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.