Finding the Fourth Proportional to 286,545.40, 429,821.70 and 86,867.80
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Solution
The fourth proportional to 286,545.40, 429,821.70 and 86,867.80 is: 130,302.79
Step by Step Solution
- Step 1: Write the proportion equation
286,545.40 : 429,821.70 = 86,867.80 : x - Step 2: Convert to fraction form
286,545.40/429,821.70 = 86,867.80/x - Step 3: Cross multiply
286,545.40x = 429,821.70 × 86,867.80 - Step 4: Simplify right side
286,545.40x = 37,337,665,471.26 - Step 5: Solve for x
x = 37,337,665,471.26/286,545.40 - Step 6: Final answer
x = 130,302.79
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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.