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Finding the Fourth Proportional to 315,197.67, 434,970.71 and 179,231.62

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Solution

The fourth proportional to 315,197.67, 434,970.71 and 179,231.62 is: 247,338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,197.67 : 434,970.71 = 179,231.62 : x
  2. Step 2: Convert to fraction form
    315,197.67/434,970.71 = 179,231.62/x
  3. Step 3: Cross multiply
    315,197.67x = 434,970.71 × 179,231.62
  4. Step 4: Simplify right side
    315,197.67x = 77,960,505,005.85
  5. Step 5: Solve for x
    x = 77,960,505,005.85/315,197.67
  6. Step 6: Final answer
    x = 247,338.46

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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.