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Finding the Fourth Proportional to 302,960.40, 454,440.60 and 218,979.60

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Solution

The fourth proportional to 302,960.40, 454,440.60 and 218,979.60 is: 328,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,960.40 : 454,440.60 = 218,979.60 : x
  2. Step 2: Convert to fraction form
    302,960.40/454,440.60 = 218,979.60/x
  3. Step 3: Cross multiply
    302,960.40x = 454,440.60 × 218,979.60
  4. Step 4: Simplify right side
    302,960.40x = 99,513,220,811.76
  5. Step 5: Solve for x
    x = 99,513,220,811.76/302,960.40
  6. Step 6: Final answer
    x = 328,469.40

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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.