Finding the Fourth Proportional to 318,823.36, 478,298.10 and 91,121.02
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Solution
The fourth proportional to 318,823.36, 478,298.10 and 91,121.02 is: 136,699.55
Step by Step Solution
- Step 1: Write the proportion equation
318,823.36 : 478,298.10 = 91,121.02 : x - Step 2: Convert to fraction form
318,823.36/478,298.10 = 91,121.02/x - Step 3: Cross multiply
318,823.36x = 478,298.10 × 91,121.02 - Step 4: Simplify right side
318,823.36x = 43,583,010,736.06 - Step 5: Solve for x
x = 43,583,010,736.06/318,823.36 - Step 6: Final answer
x = 136,699.55
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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.