Home / 221,097,215.28-305,112,453.12-121,982,140.20

Finding the Fourth Proportional to 221,097,215.28, 305,112,453.12 and 121,982,140.20

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Solution

The fourth proportional to 221,097,215.28, 305,112,453.12 and 121,982,140.20 is: 168,334,413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,097,215.28 : 305,112,453.12 = 121,982,140.20 : x
  2. Step 2: Convert to fraction form
    221,097,215.28/305,112,453.12 = 121,982,140.20/x
  3. Step 3: Cross multiply
    221,097,215.28x = 305,112,453.12 × 121,982,140.20
  4. Step 4: Simplify right side
    221,097,215.28x = 37,218,270,033,249,768
  5. Step 5: Solve for x
    x = 37,218,270,033,249,768/221,097,215.28
  6. Step 6: Final answer
    x = 168,334,413.38

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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.