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Finding the Fourth Proportional to 235,897.80, 325,541.06 and 128,468.32

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Solution

The fourth proportional to 235,897.80, 325,541.06 and 128,468.32 is: 177,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,897.80 : 325,541.06 = 128,468.32 : x
  2. Step 2: Convert to fraction form
    235,897.80/325,541.06 = 128,468.32/x
  3. Step 3: Cross multiply
    235,897.80x = 325,541.06 × 128,468.32
  4. Step 4: Simplify right side
    235,897.80x = 41,821,713,069.22
  5. Step 5: Solve for x
    x = 41,821,713,069.22/235,897.80
  6. Step 6: Final answer
    x = 177,287.42

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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.