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Finding the Fourth Proportional to 380,642.70, 524,441.07 and 251,351.58

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Solution

The fourth proportional to 380,642.70, 524,441.07 and 251,351.58 is: 346,306.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,642.70 : 524,441.07 = 251,351.58 : x
  2. Step 2: Convert to fraction form
    380,642.70/524,441.07 = 251,351.58/x
  3. Step 3: Cross multiply
    380,642.70x = 524,441.07 × 251,351.58
  4. Step 4: Simplify right side
    380,642.70x = 131,819,091,561.39
  5. Step 5: Solve for x
    x = 131,819,091,561.39/380,642.70
  6. Step 6: Final answer
    x = 346,306.63

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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.