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Finding the Fourth Proportional to 393,575.28, 543,291.48 and 259,758.96

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Solution

The fourth proportional to 393,575.28, 543,291.48 and 259,758.96 is: 358,571.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,575.28 : 543,291.48 = 259,758.96 : x
  2. Step 2: Convert to fraction form
    393,575.28/543,291.48 = 259,758.96/x
  3. Step 3: Cross multiply
    393,575.28x = 543,291.48 × 259,758.96
  4. Step 4: Simplify right side
    393,575.28x = 141,124,829,821.66
  5. Step 5: Solve for x
    x = 141,124,829,821.66/393,575.28
  6. Step 6: Final answer
    x = 358,571.38

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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.