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Finding the Fourth Proportional to 235,483.80, 324,965.34 and 128,054.58

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Solution

The fourth proportional to 235,483.80, 324,965.34 and 128,054.58 is: 176,714.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,483.80 : 324,965.34 = 128,054.58 : x
  2. Step 2: Convert to fraction form
    235,483.80/324,965.34 = 128,054.58/x
  3. Step 3: Cross multiply
    235,483.80x = 324,965.34 × 128,054.58
  4. Step 4: Simplify right side
    235,483.80x = 41,613,300,128.26
  5. Step 5: Solve for x
    x = 41,613,300,128.26/235,483.80
  6. Step 6: Final answer
    x = 176,714.07

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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.