Home / 259,988.42-389,727.47-133,689.17

Finding the Fourth Proportional to 259,988.42, 389,727.47 and 133,689.17

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Solution

The fourth proportional to 259,988.42, 389,727.47 and 133,689.17 is: 200,402.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,988.42 : 389,727.47 = 133,689.17 : x
  2. Step 2: Convert to fraction form
    259,988.42/389,727.47 = 133,689.17/x
  3. Step 3: Cross multiply
    259,988.42x = 389,727.47 × 133,689.17
  4. Step 4: Simplify right side
    259,988.42x = 52,102,339,373.42
  5. Step 5: Solve for x
    x = 52,102,339,373.42/259,988.42
  6. Step 6: Final answer
    x = 200,402.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.