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Finding the Fourth Proportional to 258,958.68, 357,369.66 and 145,785.48

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Solution

The fourth proportional to 258,958.68, 357,369.66 and 145,785.48 is: 201,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,958.68 : 357,369.66 = 145,785.48 : x
  2. Step 2: Convert to fraction form
    258,958.68/357,369.66 = 145,785.48/x
  3. Step 3: Cross multiply
    258,958.68x = 357,369.66 × 145,785.48
  4. Step 4: Simplify right side
    258,958.68x = 52,099,307,420.54
  5. Step 5: Solve for x
    x = 52,099,307,420.54/258,958.68
  6. Step 6: Final answer
    x = 201,187.72

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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.