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Finding the Fourth Proportional to 305,777.46, 421,987.00 and 169,812.01

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Solution

The fourth proportional to 305,777.46, 421,987.00 and 169,812.01 is: 234,348.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,777.46 : 421,987.00 = 169,812.01 : x
  2. Step 2: Convert to fraction form
    305,777.46/421,987.00 = 169,812.01/x
  3. Step 3: Cross multiply
    305,777.46x = 421,987.00 × 169,812.01
  4. Step 4: Simplify right side
    305,777.46x = 71,658,460,021.36
  5. Step 5: Solve for x
    x = 71,658,460,021.36/305,777.46
  6. Step 6: Final answer
    x = 234,348.41

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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.