Finding the Fourth Proportional to 438,220.84, 657,406.86 and 138,696.52
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Solution
The fourth proportional to 438,220.84, 657,406.86 and 138,696.52 is: 208,068.71
Step by Step Solution
- Step 1: Write the proportion equation
438,220.84 : 657,406.86 = 138,696.52 : x - Step 2: Convert to fraction form
438,220.84/657,406.86 = 138,696.52/x - Step 3: Cross multiply
438,220.84x = 657,406.86 × 138,696.52 - Step 4: Simplify right side
438,220.84x = 91,180,043,706.13 - Step 5: Solve for x
x = 91,180,043,706.13/438,220.84 - Step 6: Final answer
x = 208,068.71
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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.