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Finding the Fourth Proportional to 255,704.95, 352,870.63 and 139,418.52

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Solution

The fourth proportional to 255,704.95, 352,870.63 and 139,418.52 is: 192,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,704.95 : 352,870.63 = 139,418.52 : x
  2. Step 2: Convert to fraction form
    255,704.95/352,870.63 = 139,418.52/x
  3. Step 3: Cross multiply
    255,704.95x = 352,870.63 × 139,418.52
  4. Step 4: Simplify right side
    255,704.95x = 49,196,699,314.26
  5. Step 5: Solve for x
    x = 49,196,699,314.26/255,704.95
  6. Step 6: Final answer
    x = 192,396.35

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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.