Finding the Fourth Proportional to 239,698,638.36, 330,689,999.48 and 139,209,968.68
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Solution
The fourth proportional to 239,698,638.36, 330,689,999.48 and 139,209,968.68 is: 192,055,093.79
Step by Step Solution
- Step 1: Write the proportion equation
239,698,638.36 : 330,689,999.48 = 139,209,968.68 : x - Step 2: Convert to fraction form
239,698,638.36/330,689,999.48 = 139,209,968.68/x - Step 3: Cross multiply
239,698,638.36x = 330,689,999.48 × 139,209,968.68 - Step 4: Simplify right side
239,698,638.36x = 46,035,344,470,400,024 - Step 5: Solve for x
x = 46,035,344,470,400,024/239,698,638.36 - Step 6: Final answer
x = 192,055,093.79
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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.