Home / 386,859,836.31-533,864,300.15-210,647,409.75

Finding the Fourth Proportional to 386,859,836.31, 533,864,300.15 and 210,647,409.75

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Solution

The fourth proportional to 386,859,836.31, 533,864,300.15 and 210,647,409.75 is: 290,692,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,859,836.31 : 533,864,300.15 = 210,647,409.75 : x
  2. Step 2: Convert to fraction form
    386,859,836.31/533,864,300.15 = 210,647,409.75/x
  3. Step 3: Cross multiply
    386,859,836.31x = 533,864,300.15 × 210,647,409.75
  4. Step 4: Simplify right side
    386,859,836.31x = 112,457,131,985,120,656
  5. Step 5: Solve for x
    x = 112,457,131,985,120,656/386,859,836.31
  6. Step 6: Final answer
    x = 290,692,187.28

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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.