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Finding the Fourth Proportional to 428,865, 591,834.18 and 250,051.56

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Solution

The fourth proportional to 428,865, 591,834.18 and 250,051.56 is: 345,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,865 : 591,834.18 = 250,051.56 : x
  2. Step 2: Convert to fraction form
    428,865/591,834.18 = 250,051.56/x
  3. Step 3: Cross multiply
    428,865x = 591,834.18 × 250,051.56
  4. Step 4: Simplify right side
    428,865x = 147,989,059,970.32
  5. Step 5: Solve for x
    x = 147,989,059,970.32/428,865
  6. Step 6: Final answer
    x = 345,071.43

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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.