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Finding the Fourth Proportional to 258,542.01, 356,784.55 and 145,364.76

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Solution

The fourth proportional to 258,542.01, 356,784.55 and 145,364.76 is: 200,601.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,542.01 : 356,784.55 = 145,364.76 : x
  2. Step 2: Convert to fraction form
    258,542.01/356,784.55 = 145,364.76/x
  3. Step 3: Cross multiply
    258,542.01x = 356,784.55 × 145,364.76
  4. Step 4: Simplify right side
    258,542.01x = 51,863,900,119.05
  5. Step 5: Solve for x
    x = 51,863,900,119.05/258,542.01
  6. Step 6: Final answer
    x = 200,601.44

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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.