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Finding the Fourth Proportional to 258,805.59, 357,142.97 and 145,606.47

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Solution

The fourth proportional to 258,805.59, 357,142.97 and 145,606.47 is: 200,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,805.59 : 357,142.97 = 145,606.47 : x
  2. Step 2: Convert to fraction form
    258,805.59/357,142.97 = 145,606.47/x
  3. Step 3: Cross multiply
    258,805.59x = 357,142.97 × 145,606.47
  4. Step 4: Simplify right side
    258,805.59x = 52,002,326,418.98
  5. Step 5: Solve for x
    x = 52,002,326,418.98/258,805.59
  6. Step 6: Final answer
    x = 200,932.01

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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.