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Finding the Fourth Proportional to 358,700.68, 491,422.07 and 345,248.20

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Solution

The fourth proportional to 358,700.68, 491,422.07 and 345,248.20 is: 472,992.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,700.68 : 491,422.07 = 345,248.20 : x
  2. Step 2: Convert to fraction form
    358,700.68/491,422.07 = 345,248.20/x
  3. Step 3: Cross multiply
    358,700.68x = 491,422.07 × 345,248.20
  4. Step 4: Simplify right side
    358,700.68x = 169,662,585,107.77
  5. Step 5: Solve for x
    x = 169,662,585,107.77/358,700.68
  6. Step 6: Final answer
    x = 472,992.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.