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Finding the Fourth Proportional to 285,212.88, 393,860.48 and 183,415.12

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Solution

The fourth proportional to 285,212.88, 393,860.48 and 183,415.12 is: 253,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,212.88 : 393,860.48 = 183,415.12 : x
  2. Step 2: Convert to fraction form
    285,212.88/393,860.48 = 183,415.12/x
  3. Step 3: Cross multiply
    285,212.88x = 393,860.48 × 183,415.12
  4. Step 4: Simplify right side
    285,212.88x = 72,239,965,300.73
  5. Step 5: Solve for x
    x = 72,239,965,300.73/285,212.88
  6. Step 6: Final answer
    x = 253,284.37

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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.