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Finding the Fourth Proportional to 236,068.48, 325,778.16 and 128,638.48

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Solution

The fourth proportional to 236,068.48, 325,778.16 and 128,638.48 is: 177,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,068.48 : 325,778.16 = 128,638.48 : x
  2. Step 2: Convert to fraction form
    236,068.48/325,778.16 = 128,638.48/x
  3. Step 3: Cross multiply
    236,068.48x = 325,778.16 × 128,638.48
  4. Step 4: Simplify right side
    236,068.48x = 41,907,607,319.60
  5. Step 5: Solve for x
    x = 41,907,607,319.60/236,068.48
  6. Step 6: Final answer
    x = 177,523.10

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1.5x scale

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.