Home / 305,421,381-421,477,962.84-166,189,743.90

Finding the Fourth Proportional to 305,421,381, 421,477,962.84 and 166,189,743.90

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Solution

The fourth proportional to 305,421,381, 421,477,962.84 and 166,189,743.90 is: 229,339,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,421,381 : 421,477,962.84 = 166,189,743.90 : x
  2. Step 2: Convert to fraction form
    305,421,381/421,477,962.84 = 166,189,743.90/x
  3. Step 3: Cross multiply
    305,421,381x = 421,477,962.84 × 166,189,743.90
  4. Step 4: Simplify right side
    305,421,381x = 70,045,314,703,873,312
  5. Step 5: Solve for x
    x = 70,045,314,703,873,312/305,421,381
  6. Step 6: Final answer
    x = 229,339,918.75

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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.