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Finding the Fourth Proportional to 405,004.04, 558,902.06 and 223,728.62

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Solution

The fourth proportional to 405,004.04, 558,902.06 and 223,728.62 is: 308,743.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,004.04 : 558,902.06 = 223,728.62 : x
  2. Step 2: Convert to fraction form
    405,004.04/558,902.06 = 223,728.62/x
  3. Step 3: Cross multiply
    405,004.04x = 558,902.06 × 223,728.62
  4. Step 4: Simplify right side
    405,004.04x = 125,042,386,598.96
  5. Step 5: Solve for x
    x = 125,042,386,598.96/405,004.04
  6. Step 6: Final answer
    x = 308,743.55

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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.