Finding the Fourth Proportional to 403,836.72, 556,916.68 and 319,156.08
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Solution
The fourth proportional to 403,836.72, 556,916.68 and 319,156.08 is: 440,136.66
Step by Step Solution
- Step 1: Write the proportion equation
403,836.72 : 556,916.68 = 319,156.08 : x - Step 2: Convert to fraction form
403,836.72/556,916.68 = 319,156.08/x - Step 3: Cross multiply
403,836.72x = 556,916.68 × 319,156.08 - Step 4: Simplify right side
403,836.72x = 177,743,344,475.41 - Step 5: Solve for x
x = 177,743,344,475.41/403,836.72 - Step 6: Final answer
x = 440,136.66
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.