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Finding the Fourth Proportional to 330,525.93, 455,957.91 and 215,871.69

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Solution

The fourth proportional to 330,525.93, 455,957.91 and 215,871.69 is: 297,793.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,525.93 : 455,957.91 = 215,871.69 : x
  2. Step 2: Convert to fraction form
    330,525.93/455,957.91 = 215,871.69/x
  3. Step 3: Cross multiply
    330,525.93x = 455,957.91 × 215,871.69
  4. Step 4: Simplify right side
    330,525.93x = 98,428,404,600.57
  5. Step 5: Solve for x
    x = 98,428,404,600.57/330,525.93
  6. Step 6: Final answer
    x = 297,793.29

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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.