Finding the Fourth Proportional to 399,359.84, 551,138.99 and 218,088.63
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Solution
The fourth proportional to 399,359.84, 551,138.99 and 218,088.63 is: 300,974.55
Step by Step Solution
- Step 1: Write the proportion equation
399,359.84 : 551,138.99 = 218,088.63 : x - Step 2: Convert to fraction form
399,359.84/551,138.99 = 218,088.63/x - Step 3: Cross multiply
399,359.84x = 551,138.99 × 218,088.63 - Step 4: Simplify right side
399,359.84x = 120,197,146,178.24 - Step 5: Solve for x
x = 120,197,146,178.24/399,359.84 - Step 6: Final answer
x = 300,974.55
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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.