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Finding the Fourth Proportional to 479,850.76, 720,219 and 243,359.51

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Solution

The fourth proportional to 479,850.76, 720,219 and 243,359.51 is: 365,263.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,850.76 : 720,219 = 243,359.51 : x
  2. Step 2: Convert to fraction form
    479,850.76/720,219 = 243,359.51/x
  3. Step 3: Cross multiply
    479,850.76x = 720,219 × 243,359.51
  4. Step 4: Simplify right side
    479,850.76x = 175,272,142,932.69
  5. Step 5: Solve for x
    x = 175,272,142,932.69/479,850.76
  6. Step 6: Final answer
    x = 365,263.87

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1.5x scale

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.