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Finding the Fourth Proportional to 354,425.20, 531,454.20 and 105,074.80

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Solution

The fourth proportional to 354,425.20, 531,454.20 and 105,074.80 is: 157,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,425.20 : 531,454.20 = 105,074.80 : x
  2. Step 2: Convert to fraction form
    354,425.20/531,454.20 = 105,074.80/x
  3. Step 3: Cross multiply
    354,425.20x = 531,454.20 × 105,074.80
  4. Step 4: Simplify right side
    354,425.20x = 55,842,443,774.16
  5. Step 5: Solve for x
    x = 55,842,443,774.16/354,425.20
  6. Step 6: Final answer
    x = 157,557.77

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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.