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Finding the Fourth Proportional to 285,097.30, 393,478.44 and 162,589.93

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Solution

The fourth proportional to 285,097.30, 393,478.44 and 162,589.93 is: 224,399.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,097.30 : 393,478.44 = 162,589.93 : x
  2. Step 2: Convert to fraction form
    285,097.30/393,478.44 = 162,589.93/x
  3. Step 3: Cross multiply
    285,097.30x = 393,478.44 × 162,589.93
  4. Step 4: Simplify right side
    285,097.30x = 63,975,632,016.11
  5. Step 5: Solve for x
    x = 63,975,632,016.11/285,097.30
  6. Step 6: Final answer
    x = 224,399.29

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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.