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Finding the Fourth Proportional to 156,361.68, 215,257.23 and 149,220.72

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Solution

The fourth proportional to 156,361.68, 215,257.23 and 149,220.72 is: 205,426.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,361.68 : 215,257.23 = 149,220.72 : x
  2. Step 2: Convert to fraction form
    156,361.68/215,257.23 = 149,220.72/x
  3. Step 3: Cross multiply
    156,361.68x = 215,257.23 × 149,220.72
  4. Step 4: Simplify right side
    156,361.68x = 32,120,838,845.81
  5. Step 5: Solve for x
    x = 32,120,838,845.81/156,361.68
  6. Step 6: Final answer
    x = 205,426.54

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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.