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Finding the Fourth Proportional to 479,677.98, 719,391.60 and 142,627.86

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Solution

The fourth proportional to 479,677.98, 719,391.60 and 142,627.86 is: 213,904.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,677.98 : 719,391.60 = 142,627.86 : x
  2. Step 2: Convert to fraction form
    479,677.98/719,391.60 = 142,627.86/x
  3. Step 3: Cross multiply
    479,677.98x = 719,391.60 × 142,627.86
  4. Step 4: Simplify right side
    479,677.98x = 102,605,284,409.98
  5. Step 5: Solve for x
    x = 102,605,284,409.98/479,677.98
  6. Step 6: Final answer
    x = 213,904.51

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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.