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Finding the Fourth Proportional to 248,300.58, 342,631.08 and 139,379.96

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Solution

The fourth proportional to 248,300.58, 342,631.08 and 139,379.96 is: 192,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,300.58 : 342,631.08 = 139,379.96 : x
  2. Step 2: Convert to fraction form
    248,300.58/342,631.08 = 139,379.96/x
  3. Step 3: Cross multiply
    248,300.58x = 342,631.08 × 139,379.96
  4. Step 4: Simplify right side
    248,300.58x = 47,755,906,225.16
  5. Step 5: Solve for x
    x = 47,755,906,225.16/248,300.58
  6. Step 6: Final answer
    x = 192,331.03

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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.