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Finding the Fourth Proportional to 404,608.91, 558,320.51 and 223,309.15

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Solution

The fourth proportional to 404,608.91, 558,320.51 and 223,309.15 is: 308,144.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,608.91 : 558,320.51 = 223,309.15 : x
  2. Step 2: Convert to fraction form
    404,608.91/558,320.51 = 223,309.15/x
  3. Step 3: Cross multiply
    404,608.91x = 558,320.51 × 223,309.15
  4. Step 4: Simplify right side
    404,608.91x = 124,678,077,678.14
  5. Step 5: Solve for x
    x = 124,678,077,678.14/404,608.91
  6. Step 6: Final answer
    x = 308,144.67

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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.