Finding the Fourth Proportional to 420,968.66, 580,963.56 and 239,696.42
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Solution
The fourth proportional to 420,968.66, 580,963.56 and 239,696.42 is: 330,796.32
Step by Step Solution
- Step 1: Write the proportion equation
420,968.66 : 580,963.56 = 239,696.42 : x - Step 2: Convert to fraction form
420,968.66/580,963.56 = 239,696.42/x - Step 3: Cross multiply
420,968.66x = 580,963.56 × 239,696.42 - Step 4: Simplify right side
420,968.66x = 139,254,885,482.46 - Step 5: Solve for x
x = 139,254,885,482.46/420,968.66 - Step 6: Final answer
x = 330,796.32
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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.