Finding the Fourth Proportional to 421,398.84, 581,688.54 and 276,213.98
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Solution
The fourth proportional to 421,398.84, 581,688.54 and 276,213.98 is: 381,278.95
Step by Step Solution
- Step 1: Write the proportion equation
421,398.84 : 581,688.54 = 276,213.98 : x - Step 2: Convert to fraction form
421,398.84/581,688.54 = 276,213.98/x - Step 3: Cross multiply
421,398.84x = 581,688.54 × 276,213.98 - Step 4: Simplify right side
421,398.84x = 160,670,506,753.79 - Step 5: Solve for x
x = 160,670,506,753.79/421,398.84 - Step 6: Final answer
x = 381,278.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.