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Finding the Fourth Proportional to 236,143.84, 325,878.24 and 128,714.08

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Solution

The fourth proportional to 236,143.84, 325,878.24 and 128,714.08 is: 177,625.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,143.84 : 325,878.24 = 128,714.08 : x
  2. Step 2: Convert to fraction form
    236,143.84/325,878.24 = 128,714.08/x
  3. Step 3: Cross multiply
    236,143.84x = 325,878.24 × 128,714.08
  4. Step 4: Simplify right side
    236,143.84x = 41,945,117,853.62
  5. Step 5: Solve for x
    x = 41,945,117,853.62/236,143.84
  6. Step 6: Final answer
    x = 177,625.29

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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.