Home / 205,606,400.40-308,410,650-69,292,964.88

Finding the Fourth Proportional to 205,606,400.40, 308,410,650 and 69,292,964.88

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Solution

The fourth proportional to 205,606,400.40, 308,410,650 and 69,292,964.88 is: 103,939,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,606,400.40 : 308,410,650 = 69,292,964.88 : x
  2. Step 2: Convert to fraction form
    205,606,400.40/308,410,650 = 69,292,964.88/x
  3. Step 3: Cross multiply
    205,606,400.40x = 308,410,650 × 69,292,964.88
  4. Step 4: Simplify right side
    205,606,400.40x = 21,370,688,339,067,972
  5. Step 5: Solve for x
    x = 21,370,688,339,067,972/205,606,400.40
  6. Step 6: Final answer
    x = 103,939,800.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.