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Finding the Fourth Proportional to 261,816.84, 361,341 and 159,820.92

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Solution

The fourth proportional to 261,816.84, 361,341 and 159,820.92 is: 220,573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,816.84 : 361,341 = 159,820.92 : x
  2. Step 2: Convert to fraction form
    261,816.84/361,341 = 159,820.92/x
  3. Step 3: Cross multiply
    261,816.84x = 361,341 × 159,820.92
  4. Step 4: Simplify right side
    261,816.84x = 57,749,851,053.72
  5. Step 5: Solve for x
    x = 57,749,851,053.72/261,816.84
  6. Step 6: Final answer
    x = 220,573.48

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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.