Finding the Fourth Proportional to 239,698,632.36, 330,689,991.20 and 139,209,962.70
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Solution
The fourth proportional to 239,698,632.36, 330,689,991.20 and 139,209,962.70 is: 192,055,085.53
Step by Step Solution
- Step 1: Write the proportion equation
239,698,632.36 : 330,689,991.20 = 139,209,962.70 : x - Step 2: Convert to fraction form
239,698,632.36/330,689,991.20 = 139,209,962.70/x - Step 3: Cross multiply
239,698,632.36x = 330,689,991.20 × 139,209,962.70 - Step 4: Simplify right side
239,698,632.36x = 46,035,341,340,215,320 - Step 5: Solve for x
x = 46,035,341,340,215,320/239,698,632.36 - Step 6: Final answer
x = 192,055,085.53
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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.