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Finding the Fourth Proportional to 239,178.78, 330,054.57 and 131,746.50

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Solution

The fourth proportional to 239,178.78, 330,054.57 and 131,746.50 is: 181,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,178.78 : 330,054.57 = 131,746.50 : x
  2. Step 2: Convert to fraction form
    239,178.78/330,054.57 = 131,746.50/x
  3. Step 3: Cross multiply
    239,178.78x = 330,054.57 × 131,746.50
  4. Step 4: Simplify right side
    239,178.78x = 43,483,534,406.51
  5. Step 5: Solve for x
    x = 43,483,534,406.51/239,178.78
  6. Step 6: Final answer
    x = 181,803.48

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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.