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Finding the Fourth Proportional to 235,886.80, 325,525.88 and 128,457.32

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Solution

The fourth proportional to 235,886.80, 325,525.88 and 128,457.32 is: 177,272.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,886.80 : 325,525.88 = 128,457.32 : x
  2. Step 2: Convert to fraction form
    235,886.80/325,525.88 = 128,457.32/x
  3. Step 3: Cross multiply
    235,886.80x = 325,525.88 × 128,457.32
  4. Step 4: Simplify right side
    235,886.80x = 41,816,182,135.44
  5. Step 5: Solve for x
    x = 41,816,182,135.44/235,886.80
  6. Step 6: Final answer
    x = 177,272.24

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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.