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Finding the Fourth Proportional to 350,405.87, 525,745.16 and 140,103.95

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Solution

The fourth proportional to 350,405.87, 525,745.16 and 140,103.95 is: 210,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,405.87 : 525,745.16 = 140,103.95 : x
  2. Step 2: Convert to fraction form
    350,405.87/525,745.16 = 140,103.95/x
  3. Step 3: Cross multiply
    350,405.87x = 525,745.16 × 140,103.95
  4. Step 4: Simplify right side
    350,405.87x = 73,658,975,274.00
  5. Step 5: Solve for x
    x = 73,658,975,274.00/350,405.87
  6. Step 6: Final answer
    x = 210,210.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.