Finding the Fourth Proportional to 399,671.28, 551,305.08 and 263,656.92
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Solution
The fourth proportional to 399,671.28, 551,305.08 and 263,656.92 is: 363,687.38
Step by Step Solution
- Step 1: Write the proportion equation
399,671.28 : 551,305.08 = 263,656.92 : x - Step 2: Convert to fraction form
399,671.28/551,305.08 = 263,656.92/x - Step 3: Cross multiply
399,671.28x = 551,305.08 × 263,656.92 - Step 4: Simplify right side
399,671.28x = 145,355,399,373.15 - Step 5: Solve for x
x = 145,355,399,373.15/399,671.28 - Step 6: Final answer
x = 363,687.38
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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.