Finding the Fourth Proportional to 368,925.30, 509,141.70 and 278,121.06
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Solution
The fourth proportional to 368,925.30, 509,141.70 and 278,121.06 is: 383,825.75
Step by Step Solution
- Step 1: Write the proportion equation
368,925.30 : 509,141.70 = 278,121.06 : x - Step 2: Convert to fraction form
368,925.30/509,141.70 = 278,121.06/x - Step 3: Cross multiply
368,925.30x = 509,141.70 × 278,121.06 - Step 4: Simplify right side
368,925.30x = 141,603,029,294.20 - Step 5: Solve for x
x = 141,603,029,294.20/368,925.30 - Step 6: Final answer
x = 383,825.75
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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.