Finding the Fourth Proportional to 390,244.36, 538,536.10 and 220,478.44
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Solution
The fourth proportional to 390,244.36, 538,536.10 and 220,478.44 is: 304,259.62
Step by Step Solution
- Step 1: Write the proportion equation
390,244.36 : 538,536.10 = 220,478.44 : x - Step 2: Convert to fraction form
390,244.36/538,536.10 = 220,478.44/x - Step 3: Cross multiply
390,244.36x = 538,536.10 × 220,478.44 - Step 4: Simplify right side
390,244.36x = 118,735,599,211.68 - Step 5: Solve for x
x = 118,735,599,211.68/390,244.36 - Step 6: Final answer
x = 304,259.62
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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.