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Finding the Fourth Proportional to 261,571.70, 360,980.81 and 154,146.26

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Solution

The fourth proportional to 261,571.70, 360,980.81 and 154,146.26 is: 212,728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,571.70 : 360,980.81 = 154,146.26 : x
  2. Step 2: Convert to fraction form
    261,571.70/360,980.81 = 154,146.26/x
  3. Step 3: Cross multiply
    261,571.70x = 360,980.81 × 154,146.26
  4. Step 4: Simplify right side
    261,571.70x = 55,643,839,217.64
  5. Step 5: Solve for x
    x = 55,643,839,217.64/261,571.70
  6. Step 6: Final answer
    x = 212,728.82

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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.