Finding the Fourth Proportional to 289,377.99, 399,208.68 and 187,437.47
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Solution
The fourth proportional to 289,377.99, 399,208.68 and 187,437.47 is: 258,577.59
Step by Step Solution
- Step 1: Write the proportion equation
289,377.99 : 399,208.68 = 187,437.47 : x - Step 2: Convert to fraction form
289,377.99/399,208.68 = 187,437.47/x - Step 3: Cross multiply
289,377.99x = 399,208.68 × 187,437.47 - Step 4: Simplify right side
289,377.99x = 74,826,662,985.20 - Step 5: Solve for x
x = 74,826,662,985.20/289,377.99 - Step 6: Final answer
x = 258,577.59
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1.5x scale
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.