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Finding the Fourth Proportional to 234,578, 323,717.64 and 128,594

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Solution

The fourth proportional to 234,578, 323,717.64 and 128,594 is: 177,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,578 : 323,717.64 = 128,594 : x
  2. Step 2: Convert to fraction form
    234,578/323,717.64 = 128,594/x
  3. Step 3: Cross multiply
    234,578x = 323,717.64 × 128,594
  4. Step 4: Simplify right side
    234,578x = 41,628,146,198.16
  5. Step 5: Solve for x
    x = 41,628,146,198.16/234,578
  6. Step 6: Final answer
    x = 177,459.72

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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.