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Finding the Fourth Proportional to 249,978.62, 345,131.44 and 223,074.86

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Solution

The fourth proportional to 249,978.62, 345,131.44 and 223,074.86 is: 307,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,978.62 : 345,131.44 = 223,074.86 : x
  2. Step 2: Convert to fraction form
    249,978.62/345,131.44 = 223,074.86/x
  3. Step 3: Cross multiply
    249,978.62x = 345,131.44 × 223,074.86
  4. Step 4: Simplify right side
    249,978.62x = 76,990,147,659.60
  5. Step 5: Solve for x
    x = 76,990,147,659.60/249,978.62
  6. Step 6: Final answer
    x = 307,986.93

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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.