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Finding the Fourth Proportional to 306,215.94, 422,592.06 and 170,263.86

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Solution

The fourth proportional to 306,215.94, 422,592.06 and 170,263.86 is: 234,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,215.94 : 422,592.06 = 170,263.86 : x
  2. Step 2: Convert to fraction form
    306,215.94/422,592.06 = 170,263.86/x
  3. Step 3: Cross multiply
    306,215.94x = 422,592.06 × 170,263.86
  4. Step 4: Simplify right side
    306,215.94x = 71,952,155,340.95
  5. Step 5: Solve for x
    x = 71,952,155,340.95/306,215.94
  6. Step 6: Final answer
    x = 234,971.95

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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.