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Finding the Fourth Proportional to 308,226.58, 425,349.36 and 170,404.90

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Solution

The fourth proportional to 308,226.58, 425,349.36 and 170,404.90 is: 235,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,226.58 : 425,349.36 = 170,404.90 : x
  2. Step 2: Convert to fraction form
    308,226.58/425,349.36 = 170,404.90/x
  3. Step 3: Cross multiply
    308,226.58x = 425,349.36 × 170,404.90
  4. Step 4: Simplify right side
    308,226.58x = 72,481,615,155.86
  5. Step 5: Solve for x
    x = 72,481,615,155.86/308,226.58
  6. Step 6: Final answer
    x = 235,156.93

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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.