Finding the Fourth Proportional to 318,699.36, 478,344.69 and 161,038.53
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Solution
The fourth proportional to 318,699.36, 478,344.69 and 161,038.53 is: 241,707.19
Step by Step Solution
- Step 1: Write the proportion equation
318,699.36 : 478,344.69 = 161,038.53 : x - Step 2: Convert to fraction form
318,699.36/478,344.69 = 161,038.53/x - Step 3: Cross multiply
318,699.36x = 478,344.69 × 161,038.53 - Step 4: Simplify right side
318,699.36x = 77,031,925,710.91 - Step 5: Solve for x
x = 77,031,925,710.91/318,699.36 - Step 6: Final answer
x = 241,707.19
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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.