Finding the Fourth Proportional to 390,935.08, 539,541.27 and 218,918.56
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Solution
The fourth proportional to 390,935.08, 539,541.27 and 218,918.56 is: 302,136.09
Step by Step Solution
- Step 1: Write the proportion equation
390,935.08 : 539,541.27 = 218,918.56 : x - Step 2: Convert to fraction form
390,935.08/539,541.27 = 218,918.56/x - Step 3: Cross multiply
390,935.08x = 539,541.27 × 218,918.56 - Step 4: Simplify right side
390,935.08x = 118,115,597,888.97 - Step 5: Solve for x
x = 118,115,597,888.97/390,935.08 - Step 6: Final answer
x = 302,136.09
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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.