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Finding the Fourth Proportional to 350,526.78, 525,987 and 140,181.12

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Solution

The fourth proportional to 350,526.78, 525,987 and 140,181.12 is: 210,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,526.78 : 525,987 = 140,181.12 : x
  2. Step 2: Convert to fraction form
    350,526.78/525,987 = 140,181.12/x
  3. Step 3: Cross multiply
    350,526.78x = 525,987 × 140,181.12
  4. Step 4: Simplify right side
    350,526.78x = 73,733,446,765.44
  5. Step 5: Solve for x
    x = 73,733,446,765.44/350,526.78
  6. Step 6: Final answer
    x = 210,350.40

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1.5x scale

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.