Finding the Fourth Proportional to 257,730.36, 354,406.68 and 223,679.70
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Solution
The fourth proportional to 257,730.36, 354,406.68 and 223,679.70 is: 307,583.40
Step by Step Solution
- Step 1: Write the proportion equation
257,730.36 : 354,406.68 = 223,679.70 : x - Step 2: Convert to fraction form
257,730.36/354,406.68 = 223,679.70/x - Step 3: Cross multiply
257,730.36x = 354,406.68 × 223,679.70 - Step 4: Simplify right side
257,730.36x = 79,273,579,860.40 - Step 5: Solve for x
x = 79,273,579,860.40/257,730.36 - Step 6: Final answer
x = 307,583.40
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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.