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Finding the Fourth Proportional to 221,096.10, 305,123.43 and 124,330.40

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Solution

The fourth proportional to 221,096.10, 305,123.43 and 124,330.40 is: 171,582.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,096.10 : 305,123.43 = 124,330.40 : x
  2. Step 2: Convert to fraction form
    221,096.10/305,123.43 = 124,330.40/x
  3. Step 3: Cross multiply
    221,096.10x = 305,123.43 × 124,330.40
  4. Step 4: Simplify right side
    221,096.10x = 37,936,118,101.27
  5. Step 5: Solve for x
    x = 37,936,118,101.27/221,096.10
  6. Step 6: Final answer
    x = 171,582.03

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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.