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Finding the Fourth Proportional to 352,513.76, 486,288.78 and 225,055.40

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Solution

The fourth proportional to 352,513.76, 486,288.78 and 225,055.40 is: 310,461.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,513.76 : 486,288.78 = 225,055.40 : x
  2. Step 2: Convert to fraction form
    352,513.76/486,288.78 = 225,055.40/x
  3. Step 3: Cross multiply
    352,513.76x = 486,288.78 × 225,055.40
  4. Step 4: Simplify right side
    352,513.76x = 109,441,915,898.41
  5. Step 5: Solve for x
    x = 109,441,915,898.41/352,513.76
  6. Step 6: Final answer
    x = 310,461.40

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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.