Finding the Fourth Proportional to 299,417.25, 449,130.74 and 86,187.99
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Solution
The fourth proportional to 299,417.25, 449,130.74 and 86,187.99 is: 129,283.38
Step by Step Solution
- Step 1: Write the proportion equation
299,417.25 : 449,130.74 = 86,187.99 : x - Step 2: Convert to fraction form
299,417.25/449,130.74 = 86,187.99/x - Step 3: Cross multiply
299,417.25x = 449,130.74 × 86,187.99 - Step 4: Simplify right side
299,417.25x = 38,709,675,296.87 - Step 5: Solve for x
x = 38,709,675,296.87/299,417.25 - Step 6: Final answer
x = 129,283.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.