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Finding the Fourth Proportional to 236,031.26, 325,719 and 128,602.06

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Solution

The fourth proportional to 236,031.26, 325,719 and 128,602.06 is: 177,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,031.26 : 325,719 = 128,602.06 : x
  2. Step 2: Convert to fraction form
    236,031.26/325,719 = 128,602.06/x
  3. Step 3: Cross multiply
    236,031.26x = 325,719 × 128,602.06
  4. Step 4: Simplify right side
    236,031.26x = 41,888,134,381.14
  5. Step 5: Solve for x
    x = 41,888,134,381.14/236,031.26
  6. Step 6: Final answer
    x = 177,468.59

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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.