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Finding the Fourth Proportional to 347,114.40, 520,749.74 and 122,490.88

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Solution

The fourth proportional to 347,114.40, 520,749.74 and 122,490.88 is: 183,763.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,114.40 : 520,749.74 = 122,490.88 : x
  2. Step 2: Convert to fraction form
    347,114.40/520,749.74 = 122,490.88/x
  3. Step 3: Cross multiply
    347,114.40x = 520,749.74 × 122,490.88
  4. Step 4: Simplify right side
    347,114.40x = 63,787,093,912.37
  5. Step 5: Solve for x
    x = 63,787,093,912.37/347,114.40
  6. Step 6: Final answer
    x = 183,763.89

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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.