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Finding the Fourth Proportional to 288,650.05, 432,683.48 and 130,991.65

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Solution

The fourth proportional to 288,650.05, 432,683.48 and 130,991.65 is: 196,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,650.05 : 432,683.48 = 130,991.65 : x
  2. Step 2: Convert to fraction form
    288,650.05/432,683.48 = 130,991.65/x
  3. Step 3: Cross multiply
    288,650.05x = 432,683.48 × 130,991.65
  4. Step 4: Simplify right side
    288,650.05x = 56,677,922,317.98
  5. Step 5: Solve for x
    x = 56,677,922,317.98/288,650.05
  6. Step 6: Final answer
    x = 196,355.14

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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.