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Finding the Fourth Proportional to 308,370.51, 462,730.73 and 121,513.23

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Solution

The fourth proportional to 308,370.51, 462,730.73 and 121,513.23 is: 182,338.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,370.51 : 462,730.73 = 121,513.23 : x
  2. Step 2: Convert to fraction form
    308,370.51/462,730.73 = 121,513.23/x
  3. Step 3: Cross multiply
    308,370.51x = 462,730.73 × 121,513.23
  4. Step 4: Simplify right side
    308,370.51x = 56,227,905,014.99
  5. Step 5: Solve for x
    x = 56,227,905,014.99/308,370.51
  6. Step 6: Final answer
    x = 182,338.79

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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.