Finding the Fourth Proportional to 399,646.15, 551,756.09 and 260,077.74
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Solution
The fourth proportional to 399,646.15, 551,756.09 and 260,077.74 is: 359,066.33
Step by Step Solution
- Step 1: Write the proportion equation
399,646.15 : 551,756.09 = 260,077.74 : x - Step 2: Convert to fraction form
399,646.15/551,756.09 = 260,077.74/x - Step 3: Cross multiply
399,646.15x = 551,756.09 × 260,077.74 - Step 4: Simplify right side
399,646.15x = 143,499,476,918.44 - Step 5: Solve for x
x = 143,499,476,918.44/399,646.15 - Step 6: Final answer
x = 359,066.33
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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.