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Finding the Fourth Proportional to 306,279.95, 422,666.67 and 170,310.98

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Solution

The fourth proportional to 306,279.95, 422,666.67 and 170,310.98 is: 235,029.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,279.95 : 422,666.67 = 170,310.98 : x
  2. Step 2: Convert to fraction form
    306,279.95/422,666.67 = 170,310.98/x
  3. Step 3: Cross multiply
    306,279.95x = 422,666.67 × 170,310.98
  4. Step 4: Simplify right side
    306,279.95x = 71,984,772,667.70
  5. Step 5: Solve for x
    x = 71,984,772,667.70/306,279.95
  6. Step 6: Final answer
    x = 235,029.34

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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.