Finding the Fourth Proportional to 245,646.96, 338,988.76 and 138,216.88
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Solution
The fourth proportional to 245,646.96, 338,988.76 and 138,216.88 is: 190,737.02
Step by Step Solution
- Step 1: Write the proportion equation
245,646.96 : 338,988.76 = 138,216.88 : x - Step 2: Convert to fraction form
245,646.96/338,988.76 = 138,216.88/x - Step 3: Cross multiply
245,646.96x = 338,988.76 × 138,216.88 - Step 4: Simplify right side
245,646.96x = 46,853,968,762.27 - Step 5: Solve for x
x = 46,853,968,762.27/245,646.96 - Step 6: Final answer
x = 190,737.02
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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.