Finding the Fourth Proportional to 476,638.49, 715,056.21 and 139,690.19
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Solution
The fourth proportional to 476,638.49, 715,056.21 and 139,690.19 is: 209,564.14
Step by Step Solution
- Step 1: Write the proportion equation
476,638.49 : 715,056.21 = 139,690.19 : x - Step 2: Convert to fraction form
476,638.49/715,056.21 = 139,690.19/x - Step 3: Cross multiply
476,638.49x = 715,056.21 × 139,690.19 - Step 4: Simplify right side
476,638.49x = 99,886,334,260.30 - Step 5: Solve for x
x = 99,886,334,260.30/476,638.49 - Step 6: Final answer
x = 209,564.14
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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.