Finding the Fourth Proportional to 279,368,326.09, 385,467,487.90 and 169,387,070.41
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Solution
The fourth proportional to 279,368,326.09, 385,467,487.90 and 169,387,070.41 is: 233,717,291.53
Step by Step Solution
- Step 1: Write the proportion equation
279,368,326.09 : 385,467,487.90 = 169,387,070.41 : x - Step 2: Convert to fraction form
279,368,326.09/385,467,487.90 = 169,387,070.41/x - Step 3: Cross multiply
279,368,326.09x = 385,467,487.90 × 169,387,070.41 - Step 4: Simplify right side
279,368,326.09x = 65,293,208,513,683,120 - Step 5: Solve for x
x = 65,293,208,513,683,120/279,368,326.09 - Step 6: Final answer
x = 233,717,291.53
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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.