Home / 209,421,716.54-289,033,387.78-159,103,132.54

Finding the Fourth Proportional to 209,421,716.54, 289,033,387.78 and 159,103,132.54

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Solution

The fourth proportional to 209,421,716.54, 289,033,387.78 and 159,103,132.54 is: 219,586,192.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,421,716.54 : 289,033,387.78 = 159,103,132.54 : x
  2. Step 2: Convert to fraction form
    209,421,716.54/289,033,387.78 = 159,103,132.54/x
  3. Step 3: Cross multiply
    209,421,716.54x = 289,033,387.78 × 159,103,132.54
  4. Step 4: Simplify right side
    209,421,716.54x = 45,986,117,403,326,208
  5. Step 5: Solve for x
    x = 45,986,117,403,326,208/209,421,716.54
  6. Step 6: Final answer
    x = 219,586,192.70

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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.