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Finding the Fourth Proportional to 479,970.50, 720,349.27 and 243,380.84

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Solution

The fourth proportional to 479,970.50, 720,349.27 and 243,380.84 is: 365,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,970.50 : 720,349.27 = 243,380.84 : x
  2. Step 2: Convert to fraction form
    479,970.50/720,349.27 = 243,380.84/x
  3. Step 3: Cross multiply
    479,970.50x = 720,349.27 × 243,380.84
  4. Step 4: Simplify right side
    479,970.50x = 175,319,206,215.79
  5. Step 5: Solve for x
    x = 175,319,206,215.79/479,970.50
  6. Step 6: Final answer
    x = 365,270.80

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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.