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Finding the Fourth Proportional to 216,695.67, 299,041.92 and 121,211.25

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Solution

The fourth proportional to 216,695.67, 299,041.92 and 121,211.25 is: 167,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,695.67 : 299,041.92 = 121,211.25 : x
  2. Step 2: Convert to fraction form
    216,695.67/299,041.92 = 121,211.25/x
  3. Step 3: Cross multiply
    216,695.67x = 299,041.92 × 121,211.25
  4. Step 4: Simplify right side
    216,695.67x = 36,247,244,925.60
  5. Step 5: Solve for x
    x = 36,247,244,925.60/216,695.67
  6. Step 6: Final answer
    x = 167,272.59

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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.