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Finding the Fourth Proportional to 330,003.60, 494,130.60 and 260,019.60

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Solution

The fourth proportional to 330,003.60, 494,130.60 and 260,019.60 is: 389,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,003.60 : 494,130.60 = 260,019.60 : x
  2. Step 2: Convert to fraction form
    330,003.60/494,130.60 = 260,019.60/x
  3. Step 3: Cross multiply
    330,003.60x = 494,130.60 × 260,019.60
  4. Step 4: Simplify right side
    330,003.60x = 128,483,640,959.76
  5. Step 5: Solve for x
    x = 128,483,640,959.76/330,003.60
  6. Step 6: Final answer
    x = 389,340.12

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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.