Finding the Fourth Proportional to 459,621.76, 689,432.84 and 144,103.26
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Solution
The fourth proportional to 459,621.76, 689,432.84 and 144,103.26 is: 216,154.95
Step by Step Solution
- Step 1: Write the proportion equation
459,621.76 : 689,432.84 = 144,103.26 : x - Step 2: Convert to fraction form
459,621.76/689,432.84 = 144,103.26/x - Step 3: Cross multiply
459,621.76x = 689,432.84 × 144,103.26 - Step 4: Simplify right side
459,621.76x = 99,349,519,795.06 - Step 5: Solve for x
x = 99,349,519,795.06/459,621.76 - Step 6: Final answer
x = 216,154.95
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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.