Finding the Fourth Proportional to 283,638.03, 391,420.47 and 156,313.63
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Solution
The fourth proportional to 283,638.03, 391,420.47 and 156,313.63 is: 215,712.80
Step by Step Solution
- Step 1: Write the proportion equation
283,638.03 : 391,420.47 = 156,313.63 : x - Step 2: Convert to fraction form
283,638.03/391,420.47 = 156,313.63/x - Step 3: Cross multiply
283,638.03x = 391,420.47 × 156,313.63 - Step 4: Simplify right side
283,638.03x = 61,184,354,129.63 - Step 5: Solve for x
x = 61,184,354,129.63/283,638.03 - Step 6: Final answer
x = 215,712.80
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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.