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Finding the Fourth Proportional to 306,060.80, 422,353.80 and 168,240.20

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Solution

The fourth proportional to 306,060.80, 422,353.80 and 168,240.20 is: 232,165.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,060.80 : 422,353.80 = 168,240.20 : x
  2. Step 2: Convert to fraction form
    306,060.80/422,353.80 = 168,240.20/x
  3. Step 3: Cross multiply
    306,060.80x = 422,353.80 × 168,240.20
  4. Step 4: Simplify right side
    306,060.80x = 71,056,885,670.99
  5. Step 5: Solve for x
    x = 71,056,885,670.99/306,060.80
  6. Step 6: Final answer
    x = 232,165.92

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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.