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Finding the Fourth Proportional to 293,090.80, 439,636.20 and 259,265.20

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Solution

The fourth proportional to 293,090.80, 439,636.20 and 259,265.20 is: 388,897.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,090.80 : 439,636.20 = 259,265.20 : x
  2. Step 2: Convert to fraction form
    293,090.80/439,636.20 = 259,265.20/x
  3. Step 3: Cross multiply
    293,090.80x = 439,636.20 × 259,265.20
  4. Step 4: Simplify right side
    293,090.80x = 113,982,367,320.24
  5. Step 5: Solve for x
    x = 113,982,367,320.24/293,090.80
  6. Step 6: Final answer
    x = 388,897.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.