Finding the Fourth Proportional to 257,758.68, 386,642.40 and 89,283.99
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Solution
The fourth proportional to 257,758.68, 386,642.40 and 89,283.99 is: 133,927.50
Step by Step Solution
- Step 1: Write the proportion equation
257,758.68 : 386,642.40 = 89,283.99 : x - Step 2: Convert to fraction form
257,758.68/386,642.40 = 89,283.99/x - Step 3: Cross multiply
257,758.68x = 386,642.40 × 89,283.99 - Step 4: Simplify right side
257,758.68x = 34,520,976,175.18 - Step 5: Solve for x
x = 34,520,976,175.18/257,758.68 - Step 6: Final answer
x = 133,927.50
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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.