Home / 405,086.85-559,031.13-223,810.47

Finding the Fourth Proportional to 405,086.85, 559,031.13 and 223,810.47

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Solution

The fourth proportional to 405,086.85, 559,031.13 and 223,810.47 is: 308,864.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,086.85 : 559,031.13 = 223,810.47 : x
  2. Step 2: Convert to fraction form
    405,086.85/559,031.13 = 223,810.47/x
  3. Step 3: Cross multiply
    405,086.85x = 559,031.13 × 223,810.47
  4. Step 4: Simplify right side
    405,086.85x = 125,117,019,949.93
  5. Step 5: Solve for x
    x = 125,117,019,949.93/405,086.85
  6. Step 6: Final answer
    x = 308,864.68

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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.