Finding the Fourth Proportional to 390,228.48, 538,515.36 and 211,380.48
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Solution
The fourth proportional to 390,228.48, 538,515.36 and 211,380.48 is: 291,705.09
Step by Step Solution
- Step 1: Write the proportion equation
390,228.48 : 538,515.36 = 211,380.48 : x - Step 2: Convert to fraction form
390,228.48/538,515.36 = 211,380.48/x - Step 3: Cross multiply
390,228.48x = 538,515.36 × 211,380.48 - Step 4: Simplify right side
390,228.48x = 113,831,635,284.17 - Step 5: Solve for x
x = 113,831,635,284.17/390,228.48 - Step 6: Final answer
x = 291,705.09
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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.