Finding the Fourth Proportional to 331,419.76, 457,378.82 and 249,603.68
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Solution
The fourth proportional to 331,419.76, 457,378.82 and 249,603.68 is: 344,467.80
Step by Step Solution
- Step 1: Write the proportion equation
331,419.76 : 457,378.82 = 249,603.68 : x - Step 2: Convert to fraction form
331,419.76/457,378.82 = 249,603.68/x - Step 3: Cross multiply
331,419.76x = 457,378.82 × 249,603.68 - Step 4: Simplify right side
331,419.76x = 114,163,436,626.06 - Step 5: Solve for x
x = 114,163,436,626.06/331,419.76 - Step 6: Final answer
x = 344,467.80
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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.