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Finding the Fourth Proportional to 216,021.80, 323,643.90 and 176,364.20

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Solution

The fourth proportional to 216,021.80, 323,643.90 and 176,364.20 is: 264,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,021.80 : 323,643.90 = 176,364.20 : x
  2. Step 2: Convert to fraction form
    216,021.80/323,643.90 = 176,364.20/x
  3. Step 3: Cross multiply
    216,021.80x = 323,643.90 × 176,364.20
  4. Step 4: Simplify right side
    216,021.80x = 57,079,197,508.38
  5. Step 5: Solve for x
    x = 57,079,197,508.38/216,021.80
  6. Step 6: Final answer
    x = 264,228.88

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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.