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Finding the Fourth Proportional to 216,165.80, 323,615.10 and 153,957.80

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Solution

The fourth proportional to 216,165.80, 323,615.10 and 153,957.80 is: 230,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,165.80 : 323,615.10 = 153,957.80 : x
  2. Step 2: Convert to fraction form
    216,165.80/323,615.10 = 153,957.80/x
  3. Step 3: Cross multiply
    216,165.80x = 323,615.10 × 153,957.80
  4. Step 4: Simplify right side
    216,165.80x = 49,823,068,842.78
  5. Step 5: Solve for x
    x = 49,823,068,842.78/216,165.80
  6. Step 6: Final answer
    x = 230,485.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.