Finding the Fourth Proportional to 399,616.25, 551,478.36 and 218,339.41
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Solution
The fourth proportional to 399,616.25, 551,478.36 and 218,339.41 is: 301,312.71
Step by Step Solution
- Step 1: Write the proportion equation
399,616.25 : 551,478.36 = 218,339.41 : x - Step 2: Convert to fraction form
399,616.25/551,478.36 = 218,339.41/x - Step 3: Cross multiply
399,616.25x = 551,478.36 × 218,339.41 - Step 4: Simplify right side
399,616.25x = 120,409,455,901.08 - Step 5: Solve for x
x = 120,409,455,901.08/399,616.25 - Step 6: Final answer
x = 301,312.71
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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.