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Finding the Fourth Proportional to 258,778.80, 357,114.02 and 145,601.55

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Solution

The fourth proportional to 258,778.80, 357,114.02 and 145,601.55 is: 200,929.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,778.80 : 357,114.02 = 145,601.55 : x
  2. Step 2: Convert to fraction form
    258,778.80/357,114.02 = 145,601.55/x
  3. Step 3: Cross multiply
    258,778.80x = 357,114.02 × 145,601.55
  4. Step 4: Simplify right side
    258,778.80x = 51,996,354,110.72
  5. Step 5: Solve for x
    x = 51,996,354,110.72/258,778.80
  6. Step 6: Final answer
    x = 200,929.73

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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.