Finding the Fourth Proportional to 257,002.80, 385,115.40 and 217,345.20
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Solution
The fourth proportional to 257,002.80, 385,115.40 and 217,345.20 is: 325,688.99
Step by Step Solution
- Step 1: Write the proportion equation
257,002.80 : 385,115.40 = 217,345.20 : x - Step 2: Convert to fraction form
257,002.80/385,115.40 = 217,345.20/x - Step 3: Cross multiply
257,002.80x = 385,115.40 × 217,345.20 - Step 4: Simplify right side
257,002.80x = 83,702,983,636.08 - Step 5: Solve for x
x = 83,702,983,636.08/257,002.80 - Step 6: Final answer
x = 325,688.99
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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.