Home / 321,645,325.82-442,749,937.83-280,321,173.50

Finding the Fourth Proportional to 321,645,325.82, 442,749,937.83 and 280,321,173.50

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Solution

The fourth proportional to 321,645,325.82, 442,749,937.83 and 280,321,173.50 is: 385,866,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,645,325.82 : 442,749,937.83 = 280,321,173.50 : x
  2. Step 2: Convert to fraction form
    321,645,325.82/442,749,937.83 = 280,321,173.50/x
  3. Step 3: Cross multiply
    321,645,325.82x = 442,749,937.83 × 280,321,173.50
  4. Step 4: Simplify right side
    321,645,325.82x = 124,112,182,139,557,632
  5. Step 5: Solve for x
    x = 124,112,182,139,557,632/321,645,325.82
  6. Step 6: Final answer
    x = 385,866,580.91

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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.