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Finding the Fourth Proportional to 315,216.66, 434,998.49 and 171,976.72

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Solution

The fourth proportional to 315,216.66, 434,998.49 and 171,976.72 is: 237,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,216.66 : 434,998.49 = 171,976.72 : x
  2. Step 2: Convert to fraction form
    315,216.66/434,998.49 = 171,976.72/x
  3. Step 3: Cross multiply
    315,216.66x = 434,998.49 × 171,976.72
  4. Step 4: Simplify right side
    315,216.66x = 74,809,613,515.15
  5. Step 5: Solve for x
    x = 74,809,613,515.15/315,216.66
  6. Step 6: Final answer
    x = 237,327.60

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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.