Home / 279,070.20-385,114.14-151,745.69

Finding the Fourth Proportional to 279,070.20, 385,114.14 and 151,745.69

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Solution

The fourth proportional to 279,070.20, 385,114.14 and 151,745.69 is: 209,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,070.20 : 385,114.14 = 151,745.69 : x
  2. Step 2: Convert to fraction form
    279,070.20/385,114.14 = 151,745.69/x
  3. Step 3: Cross multiply
    279,070.20x = 385,114.14 × 151,745.69
  4. Step 4: Simplify right side
    279,070.20x = 58,439,408,977.49
  5. Step 5: Solve for x
    x = 58,439,408,977.49/279,070.20
  6. Step 6: Final answer
    x = 209,407.56

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1.5x scale

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.