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Finding the Fourth Proportional to 255,999.70, 353,288.08 and 139,719.52

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Solution

The fourth proportional to 255,999.70, 353,288.08 and 139,719.52 is: 192,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,999.70 : 353,288.08 = 139,719.52 : x
  2. Step 2: Convert to fraction form
    255,999.70/353,288.08 = 139,719.52/x
  3. Step 3: Cross multiply
    255,999.70x = 353,288.08 × 139,719.52
  4. Step 4: Simplify right side
    255,999.70x = 49,361,240,959.32
  5. Step 5: Solve for x
    x = 49,361,240,959.32/255,999.70
  6. Step 6: Final answer
    x = 192,817.57

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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.