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Finding the Fourth Proportional to 270,367.06, 405,669.14 and 128,314.93

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Solution

The fourth proportional to 270,367.06, 405,669.14 and 128,314.93 is: 192,528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,367.06 : 405,669.14 = 128,314.93 : x
  2. Step 2: Convert to fraction form
    270,367.06/405,669.14 = 128,314.93/x
  3. Step 3: Cross multiply
    270,367.06x = 405,669.14 × 128,314.93
  4. Step 4: Simplify right side
    270,367.06x = 52,053,407,302.26
  5. Step 5: Solve for x
    x = 52,053,407,302.26/270,367.06
  6. Step 6: Final answer
    x = 192,528.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.