Finding the Fourth Proportional to 406,129.14, 609,194.93 and 139,886.19
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Solution
The fourth proportional to 406,129.14, 609,194.93 and 139,886.19 is: 209,829.70
Step by Step Solution
- Step 1: Write the proportion equation
406,129.14 : 609,194.93 = 139,886.19 : x - Step 2: Convert to fraction form
406,129.14/609,194.93 = 139,886.19/x - Step 3: Cross multiply
406,129.14x = 609,194.93 × 139,886.19 - Step 4: Simplify right side
406,129.14x = 85,217,957,025.59 - Step 5: Solve for x
x = 85,217,957,025.59/406,129.14 - Step 6: Final answer
x = 209,829.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.