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Finding the Fourth Proportional to 295,614.72, 407,939.76 and 161,478.72

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Solution

The fourth proportional to 295,614.72, 407,939.76 and 161,478.72 is: 222,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,614.72 : 407,939.76 = 161,478.72 : x
  2. Step 2: Convert to fraction form
    295,614.72/407,939.76 = 161,478.72/x
  3. Step 3: Cross multiply
    295,614.72x = 407,939.76 × 161,478.72
  4. Step 4: Simplify right side
    295,614.72x = 65,873,590,281.91
  5. Step 5: Solve for x
    x = 65,873,590,281.91/295,614.72
  6. Step 6: Final answer
    x = 222,835.96

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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.