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Finding the Fourth Proportional to 347,639.64, 479,749.50 and 226,858.20

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Solution

The fourth proportional to 347,639.64, 479,749.50 and 226,858.20 is: 313,068.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,639.64 : 479,749.50 = 226,858.20 : x
  2. Step 2: Convert to fraction form
    347,639.64/479,749.50 = 226,858.20/x
  3. Step 3: Cross multiply
    347,639.64x = 479,749.50 × 226,858.20
  4. Step 4: Simplify right side
    347,639.64x = 108,835,108,020.90
  5. Step 5: Solve for x
    x = 108,835,108,020.90/347,639.64
  6. Step 6: Final answer
    x = 313,068.75

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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.