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Finding the Fourth Proportional to 308,767.90, 462,909.90 and 121,919.26

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Solution

The fourth proportional to 308,767.90, 462,909.90 and 121,919.26 is: 182,783.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,767.90 : 462,909.90 = 121,919.26 : x
  2. Step 2: Convert to fraction form
    308,767.90/462,909.90 = 121,919.26/x
  3. Step 3: Cross multiply
    308,767.90x = 462,909.90 × 121,919.26
  4. Step 4: Simplify right side
    308,767.90x = 56,437,632,454.67
  5. Step 5: Solve for x
    x = 56,437,632,454.67/308,767.90
  6. Step 6: Final answer
    x = 182,783.35

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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.