Home / 393,422,109.75-542,970,124.47-223,917,561.81

Finding the Fourth Proportional to 393,422,109.75, 542,970,124.47 and 223,917,561.81

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Solution

The fourth proportional to 393,422,109.75, 542,970,124.47 and 223,917,561.81 is: 309,033,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,422,109.75 : 542,970,124.47 = 223,917,561.81 : x
  2. Step 2: Convert to fraction form
    393,422,109.75/542,970,124.47 = 223,917,561.81/x
  3. Step 3: Cross multiply
    393,422,109.75x = 542,970,124.47 × 223,917,561.81
  4. Step 4: Simplify right side
    393,422,109.75x = 121,580,546,406,994,624
  5. Step 5: Solve for x
    x = 121,580,546,406,994,624/393,422,109.75
  6. Step 6: Final answer
    x = 309,033,334.41

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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.