Home / 406,846,105.18-561,441,010.71-221,211,795.58

Finding the Fourth Proportional to 406,846,105.18, 561,441,010.71 and 221,211,795.58

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Solution

The fourth proportional to 406,846,105.18, 561,441,010.71 and 221,211,795.58 is: 305,268,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,846,105.18 : 561,441,010.71 = 221,211,795.58 : x
  2. Step 2: Convert to fraction form
    406,846,105.18/561,441,010.71 = 221,211,795.58/x
  3. Step 3: Cross multiply
    406,846,105.18x = 561,441,010.71 × 221,211,795.58
  4. Step 4: Simplify right side
    406,846,105.18x = 124,197,374,091,409,120
  5. Step 5: Solve for x
    x = 124,197,374,091,409,120/406,846,105.18
  6. Step 6: Final answer
    x = 305,268,681.47

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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.