Finding the Fourth Proportional to 257,585.99, 386,106.28 and 86,644.97
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Solution
The fourth proportional to 257,585.99, 386,106.28 and 86,644.97 is: 129,875.72
Step by Step Solution
- Step 1: Write the proportion equation
257,585.99 : 386,106.28 = 86,644.97 : x - Step 2: Convert to fraction form
257,585.99/386,106.28 = 86,644.97/x - Step 3: Cross multiply
257,585.99x = 386,106.28 × 86,644.97 - Step 4: Simplify right side
257,585.99x = 33,454,166,190.45 - Step 5: Solve for x
x = 33,454,166,190.45/257,585.99 - Step 6: Final answer
x = 129,875.72
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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.