Finding the Fourth Proportional to 257,731.68, 386,280.24 and 122,866.80
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Solution
The fourth proportional to 257,731.68, 386,280.24 and 122,866.80 is: 184,148.95
Step by Step Solution
- Step 1: Write the proportion equation
257,731.68 : 386,280.24 = 122,866.80 : x - Step 2: Convert to fraction form
257,731.68/386,280.24 = 122,866.80/x - Step 3: Cross multiply
257,731.68x = 386,280.24 × 122,866.80 - Step 4: Simplify right side
257,731.68x = 47,461,016,992.03 - Step 5: Solve for x
x = 47,461,016,992.03/257,731.68 - Step 6: Final answer
x = 184,148.95
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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.