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Finding the Fourth Proportional to 342,880.20, 478,851.30 and 342,880.20

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Solution

The fourth proportional to 342,880.20, 478,851.30 and 342,880.20 is: 478,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,880.20 : 478,851.30 = 342,880.20 : x
  2. Step 2: Convert to fraction form
    342,880.20/478,851.30 = 342,880.20/x
  3. Step 3: Cross multiply
    342,880.20x = 478,851.30 × 342,880.20
  4. Step 4: Simplify right side
    342,880.20x = 164,188,629,514.26
  5. Step 5: Solve for x
    x = 164,188,629,514.26/342,880.20
  6. Step 6: Final answer
    x = 478,851.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.