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Finding the Fourth Proportional to 309,645.40, 427,350.20 and 182,332.84

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Solution

The fourth proportional to 309,645.40, 427,350.20 and 182,332.84 is: 251,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,645.40 : 427,350.20 = 182,332.84 : x
  2. Step 2: Convert to fraction form
    309,645.40/427,350.20 = 182,332.84/x
  3. Step 3: Cross multiply
    309,645.40x = 427,350.20 × 182,332.84
  4. Step 4: Simplify right side
    309,645.40x = 77,919,975,640.57
  5. Step 5: Solve for x
    x = 77,919,975,640.57/309,645.40
  6. Step 6: Final answer
    x = 251,642.61

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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.