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Finding the Fourth Proportional to 213,737.40, 320,168.70 and 108,615.60

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Solution

The fourth proportional to 213,737.40, 320,168.70 and 108,615.60 is: 162,701.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,737.40 : 320,168.70 = 108,615.60 : x
  2. Step 2: Convert to fraction form
    213,737.40/320,168.70 = 108,615.60/x
  3. Step 3: Cross multiply
    213,737.40x = 320,168.70 × 108,615.60
  4. Step 4: Simplify right side
    213,737.40x = 34,775,315,451.72
  5. Step 5: Solve for x
    x = 34,775,315,451.72/213,737.40
  6. Step 6: Final answer
    x = 162,701.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.