Home / 221,487,474.25-305,655,921.78-122,370,501.25

Finding the Fourth Proportional to 221,487,474.25, 305,655,921.78 and 122,370,501.25

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Solution

The fourth proportional to 221,487,474.25, 305,655,921.78 and 122,370,501.25 is: 168,873,063.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,487,474.25 : 305,655,921.78 = 122,370,501.25 : x
  2. Step 2: Convert to fraction form
    221,487,474.25/305,655,921.78 = 122,370,501.25/x
  3. Step 3: Cross multiply
    221,487,474.25x = 305,655,921.78 × 122,370,501.25
  4. Step 4: Simplify right side
    221,487,474.25x = 37,403,268,358,249,392
  5. Step 5: Solve for x
    x = 37,403,268,358,249,392/221,487,474.25
  6. Step 6: Final answer
    x = 168,873,063.75

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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.