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Finding the Fourth Proportional to 347,358.70, 520,908.45 and 136,953.10

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Solution

The fourth proportional to 347,358.70, 520,908.45 and 136,953.10 is: 205,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,358.70 : 520,908.45 = 136,953.10 : x
  2. Step 2: Convert to fraction form
    347,358.70/520,908.45 = 136,953.10/x
  3. Step 3: Cross multiply
    347,358.70x = 520,908.45 × 136,953.10
  4. Step 4: Simplify right side
    347,358.70x = 71,340,027,043.70
  5. Step 5: Solve for x
    x = 71,340,027,043.70/347,358.70
  6. Step 6: Final answer
    x = 205,378.55

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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.