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Finding the Fourth Proportional to 286,544.12, 429,661.74 and 219,819.56

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Solution

The fourth proportional to 286,544.12, 429,661.74 and 219,819.56 is: 329,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,544.12 : 429,661.74 = 219,819.56 : x
  2. Step 2: Convert to fraction form
    286,544.12/429,661.74 = 219,819.56/x
  3. Step 3: Cross multiply
    286,544.12x = 429,661.74 × 219,819.56
  4. Step 4: Simplify right side
    286,544.12x = 94,448,054,635.63
  5. Step 5: Solve for x
    x = 94,448,054,635.63/286,544.12
  6. Step 6: Final answer
    x = 329,610.86

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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.