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Finding the Fourth Proportional to 340,090.80, 509,801.40 and 190,402.80

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Solution

The fourth proportional to 340,090.80, 509,801.40 and 190,402.80 is: 285,416.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,090.80 : 509,801.40 = 190,402.80 : x
  2. Step 2: Convert to fraction form
    340,090.80/509,801.40 = 190,402.80/x
  3. Step 3: Cross multiply
    340,090.80x = 509,801.40 × 190,402.80
  4. Step 4: Simplify right side
    340,090.80x = 97,067,614,003.92
  5. Step 5: Solve for x
    x = 97,067,614,003.92/340,090.80
  6. Step 6: Final answer
    x = 285,416.76

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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.