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Finding the Fourth Proportional to 347,006.40, 520,509.60 and 169,627.20

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Solution

The fourth proportional to 347,006.40, 520,509.60 and 169,627.20 is: 254,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,006.40 : 520,509.60 = 169,627.20 : x
  2. Step 2: Convert to fraction form
    347,006.40/520,509.60 = 169,627.20/x
  3. Step 3: Cross multiply
    347,006.40x = 520,509.60 × 169,627.20
  4. Step 4: Simplify right side
    347,006.40x = 88,292,586,021.12
  5. Step 5: Solve for x
    x = 88,292,586,021.12/347,006.40
  6. Step 6: Final answer
    x = 254,440.80

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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.