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Finding the Fourth Proportional to 479,683.72, 719,400.22 and 142,633.60

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Solution

The fourth proportional to 479,683.72, 719,400.22 and 142,633.60 is: 213,913.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,683.72 : 719,400.22 = 142,633.60 : x
  2. Step 2: Convert to fraction form
    479,683.72/719,400.22 = 142,633.60/x
  3. Step 3: Cross multiply
    479,683.72x = 719,400.22 × 142,633.60
  4. Step 4: Simplify right side
    479,683.72x = 102,610,643,219.39
  5. Step 5: Solve for x
    x = 102,610,643,219.39/479,683.72
  6. Step 6: Final answer
    x = 213,913.12

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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.