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Finding the Fourth Proportional to 302,440.80, 453,661.20 and 197,378.40

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Solution

The fourth proportional to 302,440.80, 453,661.20 and 197,378.40 is: 296,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,440.80 : 453,661.20 = 197,378.40 : x
  2. Step 2: Convert to fraction form
    302,440.80/453,661.20 = 197,378.40/x
  3. Step 3: Cross multiply
    302,440.80x = 453,661.20 × 197,378.40
  4. Step 4: Simplify right side
    302,440.80x = 89,542,921,798.08
  5. Step 5: Solve for x
    x = 89,542,921,798.08/302,440.80
  6. Step 6: Final answer
    x = 296,067.60

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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.