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Finding the Fourth Proportional to 406,389.42, 561,091.42 and 253,660.26

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Solution

The fourth proportional to 406,389.42, 561,091.42 and 253,660.26 is: 350,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,389.42 : 561,091.42 = 253,660.26 : x
  2. Step 2: Convert to fraction form
    406,389.42/561,091.42 = 253,660.26/x
  3. Step 3: Cross multiply
    406,389.42x = 561,091.42 × 253,660.26
  4. Step 4: Simplify right side
    406,389.42x = 142,326,595,480.97
  5. Step 5: Solve for x
    x = 142,326,595,480.97/406,389.42
  6. Step 6: Final answer
    x = 350,222.20

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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.