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Finding the Fourth Proportional to 261,563.90, 360,865.26 and 170,972.10

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Solution

The fourth proportional to 261,563.90, 360,865.26 and 170,972.10 is: 235,880.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,563.90 : 360,865.26 = 170,972.10 : x
  2. Step 2: Convert to fraction form
    261,563.90/360,865.26 = 170,972.10/x
  3. Step 3: Cross multiply
    261,563.90x = 360,865.26 × 170,972.10
  4. Step 4: Simplify right side
    261,563.90x = 61,697,891,319.25
  5. Step 5: Solve for x
    x = 61,697,891,319.25/261,563.90
  6. Step 6: Final answer
    x = 235,880.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.