Finding the Fourth Proportional to 390,352.96, 538,675.50 and 218,260.36
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Solution
The fourth proportional to 390,352.96, 538,675.50 and 218,260.36 is: 301,192.82
Step by Step Solution
- Step 1: Write the proportion equation
390,352.96 : 538,675.50 = 218,260.36 : x - Step 2: Convert to fraction form
390,352.96/538,675.50 = 218,260.36/x - Step 3: Cross multiply
390,352.96x = 538,675.50 × 218,260.36 - Step 4: Simplify right side
390,352.96x = 117,571,508,553.18 - Step 5: Solve for x
x = 117,571,508,553.18/390,352.96 - Step 6: Final answer
x = 301,192.82
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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.