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Finding the Fourth Proportional to 358,662.92, 494,932.02 and 215,429

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Solution

The fourth proportional to 358,662.92, 494,932.02 and 215,429 is: 297,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,662.92 : 494,932.02 = 215,429 : x
  2. Step 2: Convert to fraction form
    358,662.92/494,932.02 = 215,429/x
  3. Step 3: Cross multiply
    358,662.92x = 494,932.02 × 215,429
  4. Step 4: Simplify right side
    358,662.92x = 106,622,710,136.58
  5. Step 5: Solve for x
    x = 106,622,710,136.58/358,662.92
  6. Step 6: Final answer
    x = 297,278.32

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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.