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Finding the Fourth Proportional to 261,719.50, 361,172.93 and 142,487.50

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Solution

The fourth proportional to 261,719.50, 361,172.93 and 142,487.50 is: 196,632.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,719.50 : 361,172.93 = 142,487.50 : x
  2. Step 2: Convert to fraction form
    261,719.50/361,172.93 = 142,487.50/x
  3. Step 3: Cross multiply
    261,719.50x = 361,172.93 × 142,487.50
  4. Step 4: Simplify right side
    261,719.50x = 51,462,627,863.38
  5. Step 5: Solve for x
    x = 51,462,627,863.38/261,719.50
  6. Step 6: Final answer
    x = 196,632.76

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1.5x scale

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.