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Finding the Fourth Proportional to 270,613.16, 405,911.34 and 128,560.66

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Solution

The fourth proportional to 270,613.16, 405,911.34 and 128,560.66 is: 192,837.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,613.16 : 405,911.34 = 128,560.66 : x
  2. Step 2: Convert to fraction form
    270,613.16/405,911.34 = 128,560.66/x
  3. Step 3: Cross multiply
    270,613.16x = 405,911.34 × 128,560.66
  4. Step 4: Simplify right side
    270,613.16x = 52,184,229,771.88
  5. Step 5: Solve for x
    x = 52,184,229,771.88/270,613.16
  6. Step 6: Final answer
    x = 192,837.00

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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.