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Finding the Fourth Proportional to 351,507.93, 485,129.22 and 215,517.84

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Solution

The fourth proportional to 351,507.93, 485,129.22 and 215,517.84 is: 297,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,507.93 : 485,129.22 = 215,517.84 : x
  2. Step 2: Convert to fraction form
    351,507.93/485,129.22 = 215,517.84/x
  3. Step 3: Cross multiply
    351,507.93x = 485,129.22 × 215,517.84
  4. Step 4: Simplify right side
    351,507.93x = 104,554,001,615.29
  5. Step 5: Solve for x
    x = 104,554,001,615.29/351,507.93
  6. Step 6: Final answer
    x = 297,444.22

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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.