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Finding the Fourth Proportional to 340,892.90, 510,355.20 and 208,032.65

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Solution

The fourth proportional to 340,892.90, 510,355.20 and 208,032.65 is: 311,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,892.90 : 510,355.20 = 208,032.65 : x
  2. Step 2: Convert to fraction form
    340,892.90/510,355.20 = 208,032.65/x
  3. Step 3: Cross multiply
    340,892.90x = 510,355.20 × 208,032.65
  4. Step 4: Simplify right side
    340,892.90x = 106,170,544,697.28
  5. Step 5: Solve for x
    x = 106,170,544,697.28/340,892.90
  6. Step 6: Final answer
    x = 311,448.39

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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.