Finding the Fourth Proportional to 321,737.20, 482,605.80 and 286,307.80
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Solution
The fourth proportional to 321,737.20, 482,605.80 and 286,307.80 is: 429,461.70
Step by Step Solution
- Step 1: Write the proportion equation
321,737.20 : 482,605.80 = 286,307.80 : x - Step 2: Convert to fraction form
321,737.20/482,605.80 = 286,307.80/x - Step 3: Cross multiply
321,737.20x = 482,605.80 × 286,307.80 - Step 4: Simplify right side
321,737.20x = 138,173,804,865.24 - Step 5: Solve for x
x = 138,173,804,865.24/321,737.20 - Step 6: Final answer
x = 429,461.70
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1.5x scale
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.