Home / 285,458.13-393,926.19-156,390.32

Finding the Fourth Proportional to 285,458.13, 393,926.19 and 156,390.32

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Solution

The fourth proportional to 285,458.13, 393,926.19 and 156,390.32 is: 215,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,458.13 : 393,926.19 = 156,390.32 : x
  2. Step 2: Convert to fraction form
    285,458.13/393,926.19 = 156,390.32/x
  3. Step 3: Cross multiply
    285,458.13x = 393,926.19 × 156,390.32
  4. Step 4: Simplify right side
    285,458.13x = 61,606,240,940.85
  5. Step 5: Solve for x
    x = 61,606,240,940.85/285,458.13
  6. Step 6: Final answer
    x = 215,815.33

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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.