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Finding the Fourth Proportional to 197,478.72, 296,252.64 and 72,820.80

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Solution

The fourth proportional to 197,478.72, 296,252.64 and 72,820.80 is: 109,243.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,478.72 : 296,252.64 = 72,820.80 : x
  2. Step 2: Convert to fraction form
    197,478.72/296,252.64 = 72,820.80/x
  3. Step 3: Cross multiply
    197,478.72x = 296,252.64 × 72,820.80
  4. Step 4: Simplify right side
    197,478.72x = 21,573,354,246.91
  5. Step 5: Solve for x
    x = 21,573,354,246.91/197,478.72
  6. Step 6: Final answer
    x = 109,243.94

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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.