Finding the Fourth Proportional to 279,493.74, 385,681.91 and 158,637.49
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Solution
The fourth proportional to 279,493.74, 385,681.91 and 158,637.49 is: 218,908.69
Step by Step Solution
- Step 1: Write the proportion equation
279,493.74 : 385,681.91 = 158,637.49 : x - Step 2: Convert to fraction form
279,493.74/385,681.91 = 158,637.49/x - Step 3: Cross multiply
279,493.74x = 385,681.91 × 158,637.49 - Step 4: Simplify right side
279,493.74x = 61,183,608,383.41 - Step 5: Solve for x
x = 61,183,608,383.41/279,493.74 - Step 6: Final answer
x = 218,908.69
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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.