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Finding the Fourth Proportional to 329,880.20, 494,820.30 and 143,256.20

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Solution

The fourth proportional to 329,880.20, 494,820.30 and 143,256.20 is: 214,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,880.20 : 494,820.30 = 143,256.20 : x
  2. Step 2: Convert to fraction form
    329,880.20/494,820.30 = 143,256.20/x
  3. Step 3: Cross multiply
    329,880.20x = 494,820.30 × 143,256.20
  4. Step 4: Simplify right side
    329,880.20x = 70,886,075,860.86
  5. Step 5: Solve for x
    x = 70,886,075,860.86/329,880.20
  6. Step 6: Final answer
    x = 214,884.30

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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.