Finding the Fourth Proportional to 368,811.12, 509,008.80 and 215,896.08
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Solution
The fourth proportional to 368,811.12, 509,008.80 and 215,896.08 is: 297,965.54
Step by Step Solution
- Step 1: Write the proportion equation
368,811.12 : 509,008.80 = 215,896.08 : x - Step 2: Convert to fraction form
368,811.12/509,008.80 = 215,896.08/x - Step 3: Cross multiply
368,811.12x = 509,008.80 × 215,896.08 - Step 4: Simplify right side
368,811.12x = 109,893,004,605.50 - Step 5: Solve for x
x = 109,893,004,605.50/368,811.12 - Step 6: Final answer
x = 297,965.54
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1.5x scale
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.