Home / 287,016,215.88-396,095,256.72-161,611,536.36

Finding the Fourth Proportional to 287,016,215.88, 396,095,256.72 and 161,611,536.36

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Solution

The fourth proportional to 287,016,215.88, 396,095,256.72 and 161,611,536.36 is: 223,031,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,016,215.88 : 396,095,256.72 = 161,611,536.36 : x
  2. Step 2: Convert to fraction form
    287,016,215.88/396,095,256.72 = 161,611,536.36/x
  3. Step 3: Cross multiply
    287,016,215.88x = 396,095,256.72 × 161,611,536.36
  4. Step 4: Simplify right side
    287,016,215.88x = 64,013,562,983,427,824
  5. Step 5: Solve for x
    x = 64,013,562,983,427,824/287,016,215.88
  6. Step 6: Final answer
    x = 223,031,171.90

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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.