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Finding the Fourth Proportional to 340,291.31, 510,398.08 and 90,992.75

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Solution

The fourth proportional to 340,291.31, 510,398.08 and 90,992.75 is: 136,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,291.31 : 510,398.08 = 90,992.75 : x
  2. Step 2: Convert to fraction form
    340,291.31/510,398.08 = 90,992.75/x
  3. Step 3: Cross multiply
    340,291.31x = 510,398.08 × 90,992.75
  4. Step 4: Simplify right side
    340,291.31x = 46,442,522,114.45
  5. Step 5: Solve for x
    x = 46,442,522,114.45/340,291.31
  6. Step 6: Final answer
    x = 136,478.72

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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.