Finding the Fourth Proportional to 478,497.12, 717,745.66 and 141,511.53
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Solution
The fourth proportional to 478,497.12, 717,745.66 and 141,511.53 is: 212,267.29
Step by Step Solution
- Step 1: Write the proportion equation
478,497.12 : 717,745.66 = 141,511.53 : x - Step 2: Convert to fraction form
478,497.12/717,745.66 = 141,511.53/x - Step 3: Cross multiply
478,497.12x = 717,745.66 × 141,511.53 - Step 4: Simplify right side
478,497.12x = 101,569,286,497.46 - Step 5: Solve for x
x = 101,569,286,497.46/478,497.12 - Step 6: Final answer
x = 212,267.29
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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.