Finding the Fourth Proportional to 390,174.62, 538,484.74 and 220,419.68
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Solution
The fourth proportional to 390,174.62, 538,484.74 and 220,419.68 is: 304,203.88
Step by Step Solution
- Step 1: Write the proportion equation
390,174.62 : 538,484.74 = 220,419.68 : x - Step 2: Convert to fraction form
390,174.62/538,484.74 = 220,419.68/x - Step 3: Cross multiply
390,174.62x = 538,484.74 × 220,419.68 - Step 4: Simplify right side
390,174.62x = 118,692,634,075.68 - Step 5: Solve for x
x = 118,692,634,075.68/390,174.62 - Step 6: Final answer
x = 304,203.88
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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.