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Finding the Fourth Proportional to 289,073.60, 433,480.80 and 131,220.80

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Solution

The fourth proportional to 289,073.60, 433,480.80 and 131,220.80 is: 196,772.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,073.60 : 433,480.80 = 131,220.80 : x
  2. Step 2: Convert to fraction form
    289,073.60/433,480.80 = 131,220.80/x
  3. Step 3: Cross multiply
    289,073.60x = 433,480.80 × 131,220.80
  4. Step 4: Simplify right side
    289,073.60x = 56,881,697,360.64
  5. Step 5: Solve for x
    x = 56,881,697,360.64/289,073.60
  6. Step 6: Final answer
    x = 196,772.37

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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.