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Finding the Fourth Proportional to 216,918.01, 299,343.10 and 120,119.94

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Solution

The fourth proportional to 216,918.01, 299,343.10 and 120,119.94 is: 165,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,918.01 : 299,343.10 = 120,119.94 : x
  2. Step 2: Convert to fraction form
    216,918.01/299,343.10 = 120,119.94/x
  3. Step 3: Cross multiply
    216,918.01x = 299,343.10 × 120,119.94
  4. Step 4: Simplify right side
    216,918.01x = 35,957,076,033.65
  5. Step 5: Solve for x
    x = 35,957,076,033.65/216,918.01
  6. Step 6: Final answer
    x = 165,763.44

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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.