Finding the Fourth Proportional to 320,126.62, 476,621.95 and 315,655.91
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Solution
The fourth proportional to 320,126.62, 476,621.95 and 315,655.91 is: 469,965.71
Step by Step Solution
- Step 1: Write the proportion equation
320,126.62 : 476,621.95 = 315,655.91 : x - Step 2: Convert to fraction form
320,126.62/476,621.95 = 315,655.91/x - Step 3: Cross multiply
320,126.62x = 476,621.95 × 315,655.91 - Step 4: Simplify right side
320,126.62x = 150,448,535,353.23 - Step 5: Solve for x
x = 150,448,535,353.23/320,126.62 - Step 6: Final answer
x = 469,965.71
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.