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Finding the Fourth Proportional to 214,676.72, 296,248.11 and 128,684.28

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Solution

The fourth proportional to 214,676.72, 296,248.11 and 128,684.28 is: 177,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,676.72 : 296,248.11 = 128,684.28 : x
  2. Step 2: Convert to fraction form
    214,676.72/296,248.11 = 128,684.28/x
  3. Step 3: Cross multiply
    214,676.72x = 296,248.11 × 128,684.28
  4. Step 4: Simplify right side
    214,676.72x = 38,122,474,736.71
  5. Step 5: Solve for x
    x = 38,122,474,736.71/214,676.72
  6. Step 6: Final answer
    x = 177,580.86

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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.