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Finding the Fourth Proportional to 358,698.93, 494,967.90 and 220,855.97

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Solution

The fourth proportional to 358,698.93, 494,967.90 and 220,855.97 is: 304,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,698.93 : 494,967.90 = 220,855.97 : x
  2. Step 2: Convert to fraction form
    358,698.93/494,967.90 = 220,855.97/x
  3. Step 3: Cross multiply
    358,698.93x = 494,967.90 × 220,855.97
  4. Step 4: Simplify right side
    358,698.93x = 109,316,613,246.61
  5. Step 5: Solve for x
    x = 109,316,613,246.61/358,698.93
  6. Step 6: Final answer
    x = 304,758.68

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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.