Home / 221,314,551.80-305,440,985.46-128,495,059.64

Finding the Fourth Proportional to 221,314,551.80, 305,440,985.46 and 128,495,059.64

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Solution

The fourth proportional to 221,314,551.80, 305,440,985.46 and 128,495,059.64 is: 177,338,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,314,551.80 : 305,440,985.46 = 128,495,059.64 : x
  2. Step 2: Convert to fraction form
    221,314,551.80/305,440,985.46 = 128,495,059.64/x
  3. Step 3: Cross multiply
    221,314,551.80x = 305,440,985.46 × 128,495,059.64
  4. Step 4: Simplify right side
    221,314,551.80x = 39,247,657,643,183,072
  5. Step 5: Solve for x
    x = 39,247,657,643,183,072/221,314,551.80
  6. Step 6: Final answer
    x = 177,338,802.73

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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.