Finding the Fourth Proportional to 407,916.24, 611,811.12 and 208,384.08
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Solution
The fourth proportional to 407,916.24, 611,811.12 and 208,384.08 is: 312,543.81
Step by Step Solution
- Step 1: Write the proportion equation
407,916.24 : 611,811.12 = 208,384.08 : x - Step 2: Convert to fraction form
407,916.24/611,811.12 = 208,384.08/x - Step 3: Cross multiply
407,916.24x = 611,811.12 × 208,384.08 - Step 4: Simplify right side
407,916.24x = 127,491,697,374.97 - Step 5: Solve for x
x = 127,491,697,374.97/407,916.24 - Step 6: Final answer
x = 312,543.81
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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.