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Finding the Fourth Proportional to 288,996.80, 433,495.20 and 164,580.80

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Solution

The fourth proportional to 288,996.80, 433,495.20 and 164,580.80 is: 246,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,996.80 : 433,495.20 = 164,580.80 : x
  2. Step 2: Convert to fraction form
    288,996.80/433,495.20 = 164,580.80/x
  3. Step 3: Cross multiply
    288,996.80x = 433,495.20 × 164,580.80
  4. Step 4: Simplify right side
    288,996.80x = 71,344,986,812.16
  5. Step 5: Solve for x
    x = 71,344,986,812.16/288,996.80
  6. Step 6: Final answer
    x = 246,871.20

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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.