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Finding the Fourth Proportional to 357,256.17, 493,244.46 and 221,434.56

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Solution

The fourth proportional to 357,256.17, 493,244.46 and 221,434.56 is: 305,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,256.17 : 493,244.46 = 221,434.56 : x
  2. Step 2: Convert to fraction form
    357,256.17/493,244.46 = 221,434.56/x
  3. Step 3: Cross multiply
    357,256.17x = 493,244.46 × 221,434.56
  4. Step 4: Simplify right side
    357,256.17x = 109,221,369,972.54
  5. Step 5: Solve for x
    x = 109,221,369,972.54/357,256.17
  6. Step 6: Final answer
    x = 305,722.84

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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.