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Finding the Fourth Proportional to 309,695.61, 464,542.56 and 85,056.27

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Solution

The fourth proportional to 309,695.61, 464,542.56 and 85,056.27 is: 127,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,695.61 : 464,542.56 = 85,056.27 : x
  2. Step 2: Convert to fraction form
    309,695.61/464,542.56 = 85,056.27/x
  3. Step 3: Cross multiply
    309,695.61x = 464,542.56 × 85,056.27
  4. Step 4: Simplify right side
    309,695.61x = 39,512,257,409.85
  5. Step 5: Solve for x
    x = 39,512,257,409.85/309,695.61
  6. Step 6: Final answer
    x = 127,584.17

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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.