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Finding the Fourth Proportional to 215,170.60, 296,731.60 and 137,670.74

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Solution

The fourth proportional to 215,170.60, 296,731.60 and 137,670.74 is: 189,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,170.60 : 296,731.60 = 137,670.74 : x
  2. Step 2: Convert to fraction form
    215,170.60/296,731.60 = 137,670.74/x
  3. Step 3: Cross multiply
    215,170.60x = 296,731.60 × 137,670.74
  4. Step 4: Simplify right side
    215,170.60x = 40,851,258,953.38
  5. Step 5: Solve for x
    x = 40,851,258,953.38/215,170.60
  6. Step 6: Final answer
    x = 189,855.21

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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.