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Finding the Fourth Proportional to 305,039.00, 420,904.37 and 190,299.42

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Solution

The fourth proportional to 305,039.00, 420,904.37 and 190,299.42 is: 262,582.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,039.00 : 420,904.37 = 190,299.42 : x
  2. Step 2: Convert to fraction form
    305,039.00/420,904.37 = 190,299.42/x
  3. Step 3: Cross multiply
    305,039.00x = 420,904.37 × 190,299.42
  4. Step 4: Simplify right side
    305,039.00x = 80,097,857,962.21
  5. Step 5: Solve for x
    x = 80,097,857,962.21/305,039.00
  6. Step 6: Final answer
    x = 262,582.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.