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Finding the Fourth Proportional to 368,009.40, 551,450.76 and 247,620.51

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Solution

The fourth proportional to 368,009.40, 551,450.76 and 247,620.51 is: 371,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,009.40 : 551,450.76 = 247,620.51 : x
  2. Step 2: Convert to fraction form
    368,009.40/551,450.76 = 247,620.51/x
  3. Step 3: Cross multiply
    368,009.40x = 551,450.76 × 247,620.51
  4. Step 4: Simplify right side
    368,009.40x = 136,550,518,431.09
  5. Step 5: Solve for x
    x = 136,550,518,431.09/368,009.40
  6. Step 6: Final answer
    x = 371,051.71

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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.