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Finding the Fourth Proportional to 341,455.20, 512,643.60 and 217,039.20

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Solution

The fourth proportional to 341,455.20, 512,643.60 and 217,039.20 is: 325,851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,455.20 : 512,643.60 = 217,039.20 : x
  2. Step 2: Convert to fraction form
    341,455.20/512,643.60 = 217,039.20/x
  3. Step 3: Cross multiply
    341,455.20x = 512,643.60 × 217,039.20
  4. Step 4: Simplify right side
    341,455.20x = 111,263,756,829.12
  5. Step 5: Solve for x
    x = 111,263,756,829.12/341,455.20
  6. Step 6: Final answer
    x = 325,851.70

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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.