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Finding the Fourth Proportional to 216,692.42, 299,063.75 and 121,218.93

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Solution

The fourth proportional to 216,692.42, 299,063.75 and 121,218.93 is: 167,297.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,692.42 : 299,063.75 = 121,218.93 : x
  2. Step 2: Convert to fraction form
    216,692.42/299,063.75 = 121,218.93/x
  3. Step 3: Cross multiply
    216,692.42x = 299,063.75 × 121,218.93
  4. Step 4: Simplify right side
    216,692.42x = 36,252,187,170.69
  5. Step 5: Solve for x
    x = 36,252,187,170.69/216,692.42
  6. Step 6: Final answer
    x = 167,297.91

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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.