Home / 305,421,124.50-421,477,608.87-166,189,487.40

Finding the Fourth Proportional to 305,421,124.50, 421,477,608.87 and 166,189,487.40

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Solution

The fourth proportional to 305,421,124.50, 421,477,608.87 and 166,189,487.40 is: 229,339,564.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,421,124.50 : 421,477,608.87 = 166,189,487.40 : x
  2. Step 2: Convert to fraction form
    305,421,124.50/421,477,608.87 = 166,189,487.40/x
  3. Step 3: Cross multiply
    305,421,124.50x = 421,477,608.87 × 166,189,487.40
  4. Step 4: Simplify right side
    305,421,124.50x = 70,045,147,768,683,000
  5. Step 5: Solve for x
    x = 70,045,147,768,683,000/305,421,124.50
  6. Step 6: Final answer
    x = 229,339,564.78

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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.