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Finding the Fourth Proportional to 350,012.80, 525,278.40 and 139,801.60

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Solution

The fourth proportional to 350,012.80, 525,278.40 and 139,801.60 is: 209,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,012.80 : 525,278.40 = 139,801.60 : x
  2. Step 2: Convert to fraction form
    350,012.80/525,278.40 = 139,801.60/x
  3. Step 3: Cross multiply
    350,012.80x = 525,278.40 × 139,801.60
  4. Step 4: Simplify right side
    350,012.80x = 73,434,760,765.44
  5. Step 5: Solve for x
    x = 73,434,760,765.44/350,012.80
  6. Step 6: Final answer
    x = 209,805.93

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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.