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Finding the Fourth Proportional to 432,621.60, 649,045.80 and 166,390.80

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Solution

The fourth proportional to 432,621.60, 649,045.80 and 166,390.80 is: 249,629.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,621.60 : 649,045.80 = 166,390.80 : x
  2. Step 2: Convert to fraction form
    432,621.60/649,045.80 = 166,390.80/x
  3. Step 3: Cross multiply
    432,621.60x = 649,045.80 × 166,390.80
  4. Step 4: Simplify right side
    432,621.60x = 107,995,249,898.64
  5. Step 5: Solve for x
    x = 107,995,249,898.64/432,621.60
  6. Step 6: Final answer
    x = 249,629.81

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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.