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Finding the Fourth Proportional to 247,005.65, 340,867.84 and 133,828.40

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Solution

The fourth proportional to 247,005.65, 340,867.84 and 133,828.40 is: 184,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,005.65 : 340,867.84 = 133,828.40 : x
  2. Step 2: Convert to fraction form
    247,005.65/340,867.84 = 133,828.40/x
  3. Step 3: Cross multiply
    247,005.65x = 340,867.84 × 133,828.40
  4. Step 4: Simplify right side
    247,005.65x = 45,617,796,969.51
  5. Step 5: Solve for x
    x = 45,617,796,969.51/247,005.65
  6. Step 6: Final answer
    x = 184,683.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.