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Finding the Fourth Proportional to 358,636.68, 494,920.02 and 215,399.16

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Solution

The fourth proportional to 358,636.68, 494,920.02 and 215,399.16 is: 297,251.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,636.68 : 494,920.02 = 215,399.16 : x
  2. Step 2: Convert to fraction form
    358,636.68/494,920.02 = 215,399.16/x
  3. Step 3: Cross multiply
    358,636.68x = 494,920.02 × 215,399.16
  4. Step 4: Simplify right side
    358,636.68x = 106,605,356,575.18
  5. Step 5: Solve for x
    x = 106,605,356,575.18/358,636.68
  6. Step 6: Final answer
    x = 297,251.68

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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.