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Finding the Fourth Proportional to 308,803.95, 426,022.56 and 187,925.40

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Solution

The fourth proportional to 308,803.95, 426,022.56 and 187,925.40 is: 259,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,803.95 : 426,022.56 = 187,925.40 : x
  2. Step 2: Convert to fraction form
    308,803.95/426,022.56 = 187,925.40/x
  3. Step 3: Cross multiply
    308,803.95x = 426,022.56 × 187,925.40
  4. Step 4: Simplify right side
    308,803.95x = 80,060,459,997.02
  5. Step 5: Solve for x
    x = 80,060,459,997.02/308,803.95
  6. Step 6: Final answer
    x = 259,259.83

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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.