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Finding the Fourth Proportional to 358,699.93, 494,969.28 and 220,856.97

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Solution

The fourth proportional to 358,699.93, 494,969.28 and 220,856.97 is: 304,760.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,699.93 : 494,969.28 = 220,856.97 : x
  2. Step 2: Convert to fraction form
    358,699.93/494,969.28 = 220,856.97/x
  3. Step 3: Cross multiply
    358,699.93x = 494,969.28 × 220,856.97
  4. Step 4: Simplify right side
    358,699.93x = 109,317,415,423.88
  5. Step 5: Solve for x
    x = 109,317,415,423.88/358,699.93
  6. Step 6: Final answer
    x = 304,760.07

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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.