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Finding the Fourth Proportional to 306,000.72, 422,280.18 and 170,034.12

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Solution

The fourth proportional to 306,000.72, 422,280.18 and 170,034.12 is: 234,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,000.72 : 422,280.18 = 170,034.12 : x
  2. Step 2: Convert to fraction form
    306,000.72/422,280.18 = 170,034.12/x
  3. Step 3: Cross multiply
    306,000.72x = 422,280.18 × 170,034.12
  4. Step 4: Simplify right side
    306,000.72x = 71,802,038,799.74
  5. Step 5: Solve for x
    x = 71,802,038,799.74/306,000.72
  6. Step 6: Final answer
    x = 234,646.63

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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.