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Finding the Fourth Proportional to 479,780.90, 719,768.55 and 164,269.70

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Solution

The fourth proportional to 479,780.90, 719,768.55 and 164,269.70 is: 246,437.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,780.90 : 719,768.55 = 164,269.70 : x
  2. Step 2: Convert to fraction form
    479,780.90/719,768.55 = 164,269.70/x
  3. Step 3: Cross multiply
    479,780.90x = 719,768.55 × 164,269.70
  4. Step 4: Simplify right side
    479,780.90x = 118,236,163,777.94
  5. Step 5: Solve for x
    x = 118,236,163,777.94/479,780.90
  6. Step 6: Final answer
    x = 246,437.83

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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.