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Finding the Fourth Proportional to 308,617.66, 462,879.71 and 83,995.59

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Solution

The fourth proportional to 308,617.66, 462,879.71 and 83,995.59 is: 125,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,617.66 : 462,879.71 = 83,995.59 : x
  2. Step 2: Convert to fraction form
    308,617.66/462,879.71 = 83,995.59/x
  3. Step 3: Cross multiply
    308,617.66x = 462,879.71 × 83,995.59
  4. Step 4: Simplify right side
    308,617.66x = 38,879,855,971.28
  5. Step 5: Solve for x
    x = 38,879,855,971.28/308,617.66
  6. Step 6: Final answer
    x = 125,980.66

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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.