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Finding the Fourth Proportional to 308,908.13, 426,166.53 and 187,952.45

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Solution

The fourth proportional to 308,908.13, 426,166.53 and 187,952.45 is: 259,297.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,908.13 : 426,166.53 = 187,952.45 : x
  2. Step 2: Convert to fraction form
    308,908.13/426,166.53 = 187,952.45/x
  3. Step 3: Cross multiply
    308,908.13x = 426,166.53 × 187,952.45
  4. Step 4: Simplify right side
    308,908.13x = 80,099,043,421.50
  5. Step 5: Solve for x
    x = 80,099,043,421.50/308,908.13
  6. Step 6: Final answer
    x = 259,297.30

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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.