Finding the Fourth Proportional to 354,437.05, 489,161.06 and 216,696.79
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Solution
The fourth proportional to 354,437.05, 489,161.06 and 216,696.79 is: 299,064.76
Step by Step Solution
- Step 1: Write the proportion equation
354,437.05 : 489,161.06 = 216,696.79 : x - Step 2: Convert to fraction form
354,437.05/489,161.06 = 216,696.79/x - Step 3: Cross multiply
354,437.05x = 489,161.06 × 216,696.79 - Step 4: Simplify right side
354,437.05x = 105,999,631,495.00 - Step 5: Solve for x
x = 105,999,631,495.00/354,437.05 - Step 6: Final answer
x = 299,064.76
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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.