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Finding the Fourth Proportional to 306,001.80, 421,337.70 and 254,388.60

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Solution

The fourth proportional to 306,001.80, 421,337.70 and 254,388.60 is: 350,270.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,001.80 : 421,337.70 = 254,388.60 : x
  2. Step 2: Convert to fraction form
    306,001.80/421,337.70 = 254,388.60/x
  3. Step 3: Cross multiply
    306,001.80x = 421,337.70 × 254,388.60
  4. Step 4: Simplify right side
    306,001.80x = 107,183,507,630.22
  5. Step 5: Solve for x
    x = 107,183,507,630.22/306,001.80
  6. Step 6: Final answer
    x = 350,270.84

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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.