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Finding the Fourth Proportional to 238,212.48, 328,739.64 and 134,838.66

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Solution

The fourth proportional to 238,212.48, 328,739.64 and 134,838.66 is: 186,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,212.48 : 328,739.64 = 134,838.66 : x
  2. Step 2: Convert to fraction form
    238,212.48/328,739.64 = 134,838.66/x
  3. Step 3: Cross multiply
    238,212.48x = 328,739.64 × 134,838.66
  4. Step 4: Simplify right side
    238,212.48x = 44,326,812,546.48
  5. Step 5: Solve for x
    x = 44,326,812,546.48/238,212.48
  6. Step 6: Final answer
    x = 186,080.98

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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.