Finding the Fourth Proportional to 478,279.91, 716,927.79 and 212,165.75
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Solution
The fourth proportional to 478,279.91, 716,927.79 and 212,165.75 is: 318,030.34
Step by Step Solution
- Step 1: Write the proportion equation
478,279.91 : 716,927.79 = 212,165.75 : x - Step 2: Convert to fraction form
478,279.91/716,927.79 = 212,165.75/x - Step 3: Cross multiply
478,279.91x = 716,927.79 × 212,165.75 - Step 4: Simplify right side
478,279.91x = 152,107,522,261.19 - Step 5: Solve for x
x = 152,107,522,261.19/478,279.91 - Step 6: Final answer
x = 318,030.34
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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.