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Finding the Fourth Proportional to 236,487, 326,349.30 and 129,058.84

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Solution

The fourth proportional to 236,487, 326,349.30 and 129,058.84 is: 178,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,487 : 326,349.30 = 129,058.84 : x
  2. Step 2: Convert to fraction form
    236,487/326,349.30 = 129,058.84/x
  3. Step 3: Cross multiply
    236,487x = 326,349.30 × 129,058.84
  4. Step 4: Simplify right side
    236,487x = 42,118,262,092.81
  5. Step 5: Solve for x
    x = 42,118,262,092.81/236,487
  6. Step 6: Final answer
    x = 178,099.69

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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.