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Finding the Fourth Proportional to 350,070.20, 525,105.30 and 209,756.60

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Solution

The fourth proportional to 350,070.20, 525,105.30 and 209,756.60 is: 314,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,070.20 : 525,105.30 = 209,756.60 : x
  2. Step 2: Convert to fraction form
    350,070.20/525,105.30 = 209,756.60/x
  3. Step 3: Cross multiply
    350,070.20x = 525,105.30 × 209,756.60
  4. Step 4: Simplify right side
    350,070.20x = 110,144,302,369.98
  5. Step 5: Solve for x
    x = 110,144,302,369.98/350,070.20
  6. Step 6: Final answer
    x = 314,634.90

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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.