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Finding the Fourth Proportional to 289,563.63, 434,357.60 and 79,201.23

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Solution

The fourth proportional to 289,563.63, 434,357.60 and 79,201.23 is: 118,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,563.63 : 434,357.60 = 79,201.23 : x
  2. Step 2: Convert to fraction form
    289,563.63/434,357.60 = 79,201.23/x
  3. Step 3: Cross multiply
    289,563.63x = 434,357.60 × 79,201.23
  4. Step 4: Simplify right side
    289,563.63x = 34,401,655,783.84
  5. Step 5: Solve for x
    x = 34,401,655,783.84/289,563.63
  6. Step 6: Final answer
    x = 118,805.17

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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.