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Finding the Fourth Proportional to 207,323.36, 286,194.51 and 139,379.74

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Solution

The fourth proportional to 207,323.36, 286,194.51 and 139,379.74 is: 192,403.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,323.36 : 286,194.51 = 139,379.74 : x
  2. Step 2: Convert to fraction form
    207,323.36/286,194.51 = 139,379.74/x
  3. Step 3: Cross multiply
    207,323.36x = 286,194.51 × 139,379.74
  4. Step 4: Simplify right side
    207,323.36x = 39,889,714,613.81
  5. Step 5: Solve for x
    x = 39,889,714,613.81/207,323.36
  6. Step 6: Final answer
    x = 192,403.38

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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.