Home / 380,469,129.98-525,038,861.61-221,689,358.34

Finding the Fourth Proportional to 380,469,129.98, 525,038,861.61 and 221,689,358.34

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Solution

The fourth proportional to 380,469,129.98, 525,038,861.61 and 221,689,358.34 is: 305,926,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,469,129.98 : 525,038,861.61 = 221,689,358.34 : x
  2. Step 2: Convert to fraction form
    380,469,129.98/525,038,861.61 = 221,689,358.34/x
  3. Step 3: Cross multiply
    380,469,129.98x = 525,038,861.61 × 221,689,358.34
  4. Step 4: Simplify right side
    380,469,129.98x = 116,395,528,333,884,960
  5. Step 5: Solve for x
    x = 116,395,528,333,884,960/380,469,129.98
  6. Step 6: Final answer
    x = 305,926,339.78

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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.