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Finding the Fourth Proportional to 306,237.90, 422,600.42 and 170,264.82

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Solution

The fourth proportional to 306,237.90, 422,600.42 and 170,264.82 is: 234,961.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,237.90 : 422,600.42 = 170,264.82 : x
  2. Step 2: Convert to fraction form
    306,237.90/422,600.42 = 170,264.82/x
  3. Step 3: Cross multiply
    306,237.90x = 422,600.42 × 170,264.82
  4. Step 4: Simplify right side
    306,237.90x = 71,953,984,443.22
  5. Step 5: Solve for x
    x = 71,953,984,443.22/306,237.90
  6. Step 6: Final answer
    x = 234,961.07

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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.