Finding the Fourth Proportional to 319,555.05, 440,985.63 and 176,315.09
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Solution
The fourth proportional to 319,555.05, 440,985.63 and 176,315.09 is: 243,314.63
Step by Step Solution
- Step 1: Write the proportion equation
319,555.05 : 440,985.63 = 176,315.09 : x - Step 2: Convert to fraction form
319,555.05/440,985.63 = 176,315.09/x - Step 3: Cross multiply
319,555.05x = 440,985.63 × 176,315.09 - Step 4: Simplify right side
319,555.05x = 77,752,418,837.23 - Step 5: Solve for x
x = 77,752,418,837.23/319,555.05 - Step 6: Final answer
x = 243,314.63
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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.