Finding the Fourth Proportional to 316,857.78, 437,263.68 and 173,623.20
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Solution
The fourth proportional to 316,857.78, 437,263.68 and 173,623.20 is: 239,599.99
Step by Step Solution
- Step 1: Write the proportion equation
316,857.78 : 437,263.68 = 173,623.20 : x - Step 2: Convert to fraction form
316,857.78/437,263.68 = 173,623.20/x - Step 3: Cross multiply
316,857.78x = 437,263.68 × 173,623.20 - Step 4: Simplify right side
316,857.78x = 75,919,119,365.38 - Step 5: Solve for x
x = 75,919,119,365.38/316,857.78 - Step 6: Final answer
x = 239,599.99
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1.5x scale
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.