Home / 492,756.20-739,134.30-212,820.20

Finding the Fourth Proportional to 492,756.20, 739,134.30 and 212,820.20

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Solution

The fourth proportional to 492,756.20, 739,134.30 and 212,820.20 is: 319,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,756.20 : 739,134.30 = 212,820.20 : x
  2. Step 2: Convert to fraction form
    492,756.20/739,134.30 = 212,820.20/x
  3. Step 3: Cross multiply
    492,756.20x = 739,134.30 × 212,820.20
  4. Step 4: Simplify right side
    492,756.20x = 157,302,709,552.86
  5. Step 5: Solve for x
    x = 157,302,709,552.86/492,756.20
  6. Step 6: Final answer
    x = 319,230.30

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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.