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Finding the Fourth Proportional to 258,505.02, 356,770.17 and 145,349.64

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Solution

The fourth proportional to 258,505.02, 356,770.17 and 145,349.64 is: 200,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,505.02 : 356,770.17 = 145,349.64 : x
  2. Step 2: Convert to fraction form
    258,505.02/356,770.17 = 145,349.64/x
  3. Step 3: Cross multiply
    258,505.02x = 356,770.17 × 145,349.64
  4. Step 4: Simplify right side
    258,505.02x = 51,856,415,772.24
  5. Step 5: Solve for x
    x = 51,856,415,772.24/258,505.02
  6. Step 6: Final answer
    x = 200,601.19

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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.