Finding the Fourth Proportional to 236,829.72, 326,820.87 and 129,397.08
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Solution
The fourth proportional to 236,829.72, 326,820.87 and 129,397.08 is: 178,565.71
Step by Step Solution
- Step 1: Write the proportion equation
236,829.72 : 326,820.87 = 129,397.08 : x - Step 2: Convert to fraction form
236,829.72/326,820.87 = 129,397.08/x - Step 3: Cross multiply
236,829.72x = 326,820.87 × 129,397.08 - Step 4: Simplify right side
236,829.72x = 42,289,666,261.06 - Step 5: Solve for x
x = 42,289,666,261.06/236,829.72 - Step 6: Final answer
x = 178,565.71
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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.