Home / 285,440.25-393,907.55-158,124.09

Finding the Fourth Proportional to 285,440.25, 393,907.55 and 158,124.09

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Solution

The fourth proportional to 285,440.25, 393,907.55 and 158,124.09 is: 218,211.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,440.25 : 393,907.55 = 158,124.09 : x
  2. Step 2: Convert to fraction form
    285,440.25/393,907.55 = 158,124.09/x
  3. Step 3: Cross multiply
    285,440.25x = 393,907.55 × 158,124.09
  4. Step 4: Simplify right side
    285,440.25x = 62,286,272,097.26
  5. Step 5: Solve for x
    x = 62,286,272,097.26/285,440.25
  6. Step 6: Final answer
    x = 218,211.24

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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.