Finding the Fourth Proportional to 257,533.02, 386,225.64 and 77,635.98
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Solution
The fourth proportional to 257,533.02, 386,225.64 and 77,635.98 is: 116,431.70
Step by Step Solution
- Step 1: Write the proportion equation
257,533.02 : 386,225.64 = 77,635.98 : x - Step 2: Convert to fraction form
257,533.02/386,225.64 = 77,635.98/x - Step 3: Cross multiply
257,533.02x = 386,225.64 × 77,635.98 - Step 4: Simplify right side
257,533.02x = 29,985,006,062.53 - Step 5: Solve for x
x = 29,985,006,062.53/257,533.02 - Step 6: Final answer
x = 116,431.70
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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.