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Finding the Fourth Proportional to 474,866.69, 655,186.12 and 305,199.23

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Solution

The fourth proportional to 474,866.69, 655,186.12 and 305,199.23 is: 421,091.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,866.69 : 655,186.12 = 305,199.23 : x
  2. Step 2: Convert to fraction form
    474,866.69/655,186.12 = 305,199.23/x
  3. Step 3: Cross multiply
    474,866.69x = 655,186.12 × 305,199.23
  4. Step 4: Simplify right side
    474,866.69x = 199,962,295,291.76
  5. Step 5: Solve for x
    x = 199,962,295,291.76/474,866.69
  6. Step 6: Final answer
    x = 421,091.44

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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.