Finding the Fourth Proportional to 279,279.47, 385,408.05 and 158,420.99
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Solution
The fourth proportional to 279,279.47, 385,408.05 and 158,420.99 is: 218,622.32
Step by Step Solution
- Step 1: Write the proportion equation
279,279.47 : 385,408.05 = 158,420.99 : x - Step 2: Convert to fraction form
279,279.47/385,408.05 = 158,420.99/x - Step 3: Cross multiply
279,279.47x = 385,408.05 × 158,420.99 - Step 4: Simplify right side
279,279.47x = 61,056,724,834.97 - Step 5: Solve for x
x = 61,056,724,834.97/279,279.47 - Step 6: Final answer
x = 218,622.32
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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.