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Finding the Fourth Proportional to 216,699.98, 299,046.74 and 121,200.57

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Solution

The fourth proportional to 216,699.98, 299,046.74 and 121,200.57 is: 167,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,699.98 : 299,046.74 = 121,200.57 : x
  2. Step 2: Convert to fraction form
    216,699.98/299,046.74 = 121,200.57/x
  3. Step 3: Cross multiply
    216,699.98x = 299,046.74 × 121,200.57
  4. Step 4: Simplify right side
    216,699.98x = 36,244,634,738.64
  5. Step 5: Solve for x
    x = 36,244,634,738.64/216,699.98
  6. Step 6: Final answer
    x = 167,257.22

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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.