Finding the Fourth Proportional to 212,970,106.80, 293,898,768.96 and 115,184,962.80
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Solution
The fourth proportional to 212,970,106.80, 293,898,768.96 and 115,184,962.80 is: 158,955,260.33
Step by Step Solution
- Step 1: Write the proportion equation
212,970,106.80 : 293,898,768.96 = 115,184,962.80 : x - Step 2: Convert to fraction form
212,970,106.80/293,898,768.96 = 115,184,962.80/x - Step 3: Cross multiply
212,970,106.80x = 293,898,768.96 × 115,184,962.80 - Step 4: Simplify right side
212,970,106.80x = 33,852,718,769,623,392 - Step 5: Solve for x
x = 33,852,718,769,623,392/212,970,106.80 - Step 6: Final answer
x = 158,955,260.33
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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.