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Finding the Fourth Proportional to 519,933.60, 779,900.40 and 145,956.60

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Solution

The fourth proportional to 519,933.60, 779,900.40 and 145,956.60 is: 218,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,933.60 : 779,900.40 = 145,956.60 : x
  2. Step 2: Convert to fraction form
    519,933.60/779,900.40 = 145,956.60/x
  3. Step 3: Cross multiply
    519,933.60x = 779,900.40 × 145,956.60
  4. Step 4: Simplify right side
    519,933.60x = 113,831,610,722.64
  5. Step 5: Solve for x
    x = 113,831,610,722.64/519,933.60
  6. Step 6: Final answer
    x = 218,934.90

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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.