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Finding the Fourth Proportional to 238,358.21, 328,852.86 and 136,346.51

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Solution

The fourth proportional to 238,358.21, 328,852.86 and 136,346.51 is: 188,111.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,358.21 : 328,852.86 = 136,346.51 : x
  2. Step 2: Convert to fraction form
    238,358.21/328,852.86 = 136,346.51/x
  3. Step 3: Cross multiply
    238,358.21x = 328,852.86 × 136,346.51
  4. Step 4: Simplify right side
    238,358.21x = 44,837,938,120.25
  5. Step 5: Solve for x
    x = 44,837,938,120.25/238,358.21
  6. Step 6: Final answer
    x = 188,111.58

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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.