Finding the Fourth Proportional to 211,328.53, 291,663.27 and 130,781.99
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Solution
The fourth proportional to 211,328.53, 291,663.27 and 130,781.99 is: 180,497.65
Step by Step Solution
- Step 1: Write the proportion equation
211,328.53 : 291,663.27 = 130,781.99 : x - Step 2: Convert to fraction form
211,328.53/291,663.27 = 130,781.99/x - Step 3: Cross multiply
211,328.53x = 291,663.27 × 130,781.99 - Step 4: Simplify right side
211,328.53x = 38,144,302,860.51 - Step 5: Solve for x
x = 38,144,302,860.51/211,328.53 - Step 6: Final answer
x = 180,497.65
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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.