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Finding the Fourth Proportional to 358,734.80, 538,102.20 and 344,956.70

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Solution

The fourth proportional to 358,734.80, 538,102.20 and 344,956.70 is: 517,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,734.80 : 538,102.20 = 344,956.70 : x
  2. Step 2: Convert to fraction form
    358,734.80/538,102.20 = 344,956.70/x
  3. Step 3: Cross multiply
    358,734.80x = 538,102.20 × 344,956.70
  4. Step 4: Simplify right side
    358,734.80x = 185,621,959,174.74
  5. Step 5: Solve for x
    x = 185,621,959,174.74/358,734.80
  6. Step 6: Final answer
    x = 517,435.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.