Finding the Fourth Proportional to 390,237.12, 538,525.44 and 211,389.12
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Solution
The fourth proportional to 390,237.12, 538,525.44 and 211,389.12 is: 291,716.02
Step by Step Solution
- Step 1: Write the proportion equation
390,237.12 : 538,525.44 = 211,389.12 : x - Step 2: Convert to fraction form
390,237.12/538,525.44 = 211,389.12/x - Step 3: Cross multiply
390,237.12x = 538,525.44 × 211,389.12 - Step 4: Simplify right side
390,237.12x = 113,838,418,859.21 - Step 5: Solve for x
x = 113,838,418,859.21/390,237.12 - Step 6: Final answer
x = 291,716.02
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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.