Finding the Fourth Proportional to 389,765.92, 537,511.94 and 258,711.80
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Solution
The fourth proportional to 389,765.92, 537,511.94 and 258,711.80 is: 356,779.99
Step by Step Solution
- Step 1: Write the proportion equation
389,765.92 : 537,511.94 = 258,711.80 : x - Step 2: Convert to fraction form
389,765.92/537,511.94 = 258,711.80/x - Step 3: Cross multiply
389,765.92x = 537,511.94 × 258,711.80 - Step 4: Simplify right side
389,765.92x = 139,060,681,518.89 - Step 5: Solve for x
x = 139,060,681,518.89/389,765.92 - Step 6: Final answer
x = 356,779.99
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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.