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Finding the Fourth Proportional to 291,380.48, 402,117.46 and 162,318.79

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Solution

The fourth proportional to 291,380.48, 402,117.46 and 162,318.79 is: 224,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,380.48 : 402,117.46 = 162,318.79 : x
  2. Step 2: Convert to fraction form
    291,380.48/402,117.46 = 162,318.79/x
  3. Step 3: Cross multiply
    291,380.48x = 402,117.46 × 162,318.79
  4. Step 4: Simplify right side
    291,380.48x = 65,271,218,733.48
  5. Step 5: Solve for x
    x = 65,271,218,733.48/291,380.48
  6. Step 6: Final answer
    x = 224,006.84

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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.