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Finding the Fourth Proportional to 261,221.28, 360,484.24 and 141,991.84

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Solution

The fourth proportional to 261,221.28, 360,484.24 and 141,991.84 is: 195,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,221.28 : 360,484.24 = 141,991.84 : x
  2. Step 2: Convert to fraction form
    261,221.28/360,484.24 = 141,991.84/x
  3. Step 3: Cross multiply
    261,221.28x = 360,484.24 × 141,991.84
  4. Step 4: Simplify right side
    261,221.28x = 51,185,820,528.60
  5. Step 5: Solve for x
    x = 51,185,820,528.60/261,221.28
  6. Step 6: Final answer
    x = 195,948.13

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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.