Home / 305,423,571.88-421,480,986.25-166,191,934.78

Finding the Fourth Proportional to 305,423,571.88, 421,480,986.25 and 166,191,934.78

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Solution

The fourth proportional to 305,423,571.88, 421,480,986.25 and 166,191,934.78 is: 229,342,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,423,571.88 : 421,480,986.25 = 166,191,934.78 : x
  2. Step 2: Convert to fraction form
    305,423,571.88/421,480,986.25 = 166,191,934.78/x
  3. Step 3: Cross multiply
    305,423,571.88x = 421,480,986.25 × 166,191,934.78
  4. Step 4: Simplify right side
    305,423,571.88x = 70,046,740,575,762,672
  5. Step 5: Solve for x
    x = 70,046,740,575,762,672/305,423,571.88
  6. Step 6: Final answer
    x = 229,342,942.15

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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.