Finding the Fourth Proportional to 286,043.13, 429,067.80 and 86,365.17
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Solution
The fourth proportional to 286,043.13, 429,067.80 and 86,365.17 is: 129,548.69
Step by Step Solution
- Step 1: Write the proportion equation
286,043.13 : 429,067.80 = 86,365.17 : x - Step 2: Convert to fraction form
286,043.13/429,067.80 = 86,365.17/x - Step 3: Cross multiply
286,043.13x = 429,067.80 × 86,365.17 - Step 4: Simplify right side
286,043.13x = 37,056,513,488.53 - Step 5: Solve for x
x = 37,056,513,488.53/286,043.13 - Step 6: Final answer
x = 129,548.69
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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.