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Finding the Fourth Proportional to 258,857.67, 357,222.68 and 144,137.69

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Solution

The fourth proportional to 258,857.67, 357,222.68 and 144,137.69 is: 198,909.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,857.67 : 357,222.68 = 144,137.69 : x
  2. Step 2: Convert to fraction form
    258,857.67/357,222.68 = 144,137.69/x
  3. Step 3: Cross multiply
    258,857.67x = 357,222.68 × 144,137.69
  4. Step 4: Simplify right side
    258,857.67x = 51,489,251,910.81
  5. Step 5: Solve for x
    x = 51,489,251,910.81/258,857.67
  6. Step 6: Final answer
    x = 198,909.51

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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.