Finding the Fourth Proportional to 638,705.50, 958,212.18 and 239,349.76
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Solution
The fourth proportional to 638,705.50, 958,212.18 and 239,349.76 is: 359,082.32
Step by Step Solution
- Step 1: Write the proportion equation
638,705.50 : 958,212.18 = 239,349.76 : x - Step 2: Convert to fraction form
638,705.50/958,212.18 = 239,349.76/x - Step 3: Cross multiply
638,705.50x = 958,212.18 × 239,349.76 - Step 4: Simplify right side
638,705.50x = 229,347,855,312.08 - Step 5: Solve for x
x = 229,347,855,312.08/638,705.50 - Step 6: Final answer
x = 359,082.32
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1.5x scale
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.