Finding the Fourth Proportional to 399,372.93, 550,197.99 and 278,294.49
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Solution
The fourth proportional to 399,372.93, 550,197.99 and 278,294.49 is: 383,393.71
Step by Step Solution
- Step 1: Write the proportion equation
399,372.93 : 550,197.99 = 278,294.49 : x - Step 2: Convert to fraction form
399,372.93/550,197.99 = 278,294.49/x - Step 3: Cross multiply
399,372.93x = 550,197.99 × 278,294.49 - Step 4: Simplify right side
399,372.93x = 153,117,069,026.08 - Step 5: Solve for x
x = 153,117,069,026.08/399,372.93 - Step 6: Final answer
x = 383,393.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.