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Finding the Fourth Proportional to 261,666.54, 360,979.20 and 154,163.34

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Solution

The fourth proportional to 261,666.54, 360,979.20 and 154,163.34 is: 212,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,666.54 : 360,979.20 = 154,163.34 : x
  2. Step 2: Convert to fraction form
    261,666.54/360,979.20 = 154,163.34/x
  3. Step 3: Cross multiply
    261,666.54x = 360,979.20 × 154,163.34
  4. Step 4: Simplify right side
    261,666.54x = 55,649,759,142.53
  5. Step 5: Solve for x
    x = 55,649,759,142.53/261,666.54
  6. Step 6: Final answer
    x = 212,674.34

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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.