Finding the Fourth Proportional to 354,368.21, 489,037.95 and 216,569.43
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Solution
The fourth proportional to 354,368.21, 489,037.95 and 216,569.43 is: 298,871.82
Step by Step Solution
- Step 1: Write the proportion equation
354,368.21 : 489,037.95 = 216,569.43 : x - Step 2: Convert to fraction form
354,368.21/489,037.95 = 216,569.43/x - Step 3: Cross multiply
354,368.21x = 489,037.95 × 216,569.43 - Step 4: Simplify right side
354,368.21x = 105,910,670,079.87 - Step 5: Solve for x
x = 105,910,670,079.87/354,368.21 - Step 6: Final answer
x = 298,871.82
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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.