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Finding the Fourth Proportional to 428,706.53, 591,623.15 and 235,101.98

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Solution

The fourth proportional to 428,706.53, 591,623.15 and 235,101.98 is: 324,445.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,706.53 : 591,623.15 = 235,101.98 : x
  2. Step 2: Convert to fraction form
    428,706.53/591,623.15 = 235,101.98/x
  3. Step 3: Cross multiply
    428,706.53x = 591,623.15 × 235,101.98
  4. Step 4: Simplify right side
    428,706.53x = 139,091,769,845.21
  5. Step 5: Solve for x
    x = 139,091,769,845.21/428,706.53
  6. Step 6: Final answer
    x = 324,445.19

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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.