Finding the Fourth Proportional to 276,567.21, 381,669.98 and 155,712.78
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Solution
The fourth proportional to 276,567.21, 381,669.98 and 155,712.78 is: 214,887.70
Step by Step Solution
- Step 1: Write the proportion equation
276,567.21 : 381,669.98 = 155,712.78 : x - Step 2: Convert to fraction form
276,567.21/381,669.98 = 155,712.78/x - Step 3: Cross multiply
276,567.21x = 381,669.98 × 155,712.78 - Step 4: Simplify right side
276,567.21x = 59,430,892,849.78 - Step 5: Solve for x
x = 59,430,892,849.78/276,567.21 - Step 6: Final answer
x = 214,887.70
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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.