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Finding the Fourth Proportional to 206,869.50, 285,480.18 and 117,445.50

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Solution

The fourth proportional to 206,869.50, 285,480.18 and 117,445.50 is: 162,074.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,869.50 : 285,480.18 = 117,445.50 : x
  2. Step 2: Convert to fraction form
    206,869.50/285,480.18 = 117,445.50/x
  3. Step 3: Cross multiply
    206,869.50x = 285,480.18 × 117,445.50
  4. Step 4: Simplify right side
    206,869.50x = 33,528,362,480.19
  5. Step 5: Solve for x
    x = 33,528,362,480.19/206,869.50
  6. Step 6: Final answer
    x = 162,074.94

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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.