Finding the Fourth Proportional to 291,709.13, 437,637.49 and 81,347.09
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Solution
The fourth proportional to 291,709.13, 437,637.49 and 81,347.09 is: 122,041.21
Step by Step Solution
- Step 1: Write the proportion equation
291,709.13 : 437,637.49 = 81,347.09 : x - Step 2: Convert to fraction form
291,709.13/437,637.49 = 81,347.09/x - Step 3: Cross multiply
291,709.13x = 437,637.49 × 81,347.09 - Step 4: Simplify right side
291,709.13x = 35,600,533,894.85 - Step 5: Solve for x
x = 35,600,533,894.85/291,709.13 - Step 6: Final answer
x = 122,041.21
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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.