Finding the Fourth Proportional to 254,349.99, 381,521.09 and 85,988.58
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Solution
The fourth proportional to 254,349.99, 381,521.09 and 85,988.58 is: 128,981.55
Step by Step Solution
- Step 1: Write the proportion equation
254,349.99 : 381,521.09 = 85,988.58 : x - Step 2: Convert to fraction form
254,349.99/381,521.09 = 85,988.58/x - Step 3: Cross multiply
254,349.99x = 381,521.09 × 85,988.58 - Step 4: Simplify right side
254,349.99x = 32,806,456,339.21 - Step 5: Solve for x
x = 32,806,456,339.21/254,349.99 - Step 6: Final answer
x = 128,981.55
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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.