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Finding the Fourth Proportional to 216,391.17, 298,614.29 and 120,898.47

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Solution

The fourth proportional to 216,391.17, 298,614.29 and 120,898.47 is: 166,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,391.17 : 298,614.29 = 120,898.47 : x
  2. Step 2: Convert to fraction form
    216,391.17/298,614.29 = 120,898.47/x
  3. Step 3: Cross multiply
    216,391.17x = 298,614.29 × 120,898.47
  4. Step 4: Simplify right side
    216,391.17x = 36,102,010,176.64
  5. Step 5: Solve for x
    x = 36,102,010,176.64/216,391.17
  6. Step 6: Final answer
    x = 166,836.80

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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.