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Finding the Fourth Proportional to 358,935.70, 538,403.55 and 225,966.10

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Solution

The fourth proportional to 358,935.70, 538,403.55 and 225,966.10 is: 338,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,935.70 : 538,403.55 = 225,966.10 : x
  2. Step 2: Convert to fraction form
    358,935.70/538,403.55 = 225,966.10/x
  3. Step 3: Cross multiply
    358,935.70x = 538,403.55 × 225,966.10
  4. Step 4: Simplify right side
    358,935.70x = 121,660,950,419.66
  5. Step 5: Solve for x
    x = 121,660,950,419.66/358,935.70
  6. Step 6: Final answer
    x = 338,949.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.