Finding the Fourth Proportional to 261,781.84, 361,249.05 and 159,977.53
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Solution
The fourth proportional to 261,781.84, 361,249.05 and 159,977.53 is: 220,762.95
Step by Step Solution
- Step 1: Write the proportion equation
261,781.84 : 361,249.05 = 159,977.53 : x - Step 2: Convert to fraction form
261,781.84/361,249.05 = 159,977.53/x - Step 3: Cross multiply
261,781.84x = 361,249.05 × 159,977.53 - Step 4: Simplify right side
261,781.84x = 57,791,730,733.85 - Step 5: Solve for x
x = 57,791,730,733.85/261,781.84 - Step 6: Final answer
x = 220,762.95
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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.