Finding the Fourth Proportional to 310,041.36, 427,987.08 and 209,575.44
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Solution
The fourth proportional to 310,041.36, 427,987.08 and 209,575.44 is: 289,301.98
Step by Step Solution
- Step 1: Write the proportion equation
310,041.36 : 427,987.08 = 209,575.44 : x - Step 2: Convert to fraction form
310,041.36/427,987.08 = 209,575.44/x - Step 3: Cross multiply
310,041.36x = 427,987.08 × 209,575.44 - Step 4: Simplify right side
310,041.36x = 89,695,580,605.32 - Step 5: Solve for x
x = 89,695,580,605.32/310,041.36 - Step 6: Final answer
x = 289,301.98
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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.