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Finding the Fourth Proportional to 283,080.80, 390,650.10 and 155,755.82

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Solution

The fourth proportional to 283,080.80, 390,650.10 and 155,755.82 is: 214,942.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,080.80 : 390,650.10 = 155,755.82 : x
  2. Step 2: Convert to fraction form
    283,080.80/390,650.10 = 155,755.82/x
  3. Step 3: Cross multiply
    283,080.80x = 390,650.10 × 155,755.82
  4. Step 4: Simplify right side
    283,080.80x = 60,846,026,658.58
  5. Step 5: Solve for x
    x = 60,846,026,658.58/283,080.80
  6. Step 6: Final answer
    x = 214,942.26

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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.