Finding the Fourth Proportional to 368,814.12, 509,012.94 and 215,899.08
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Solution
The fourth proportional to 368,814.12, 509,012.94 and 215,899.08 is: 297,969.68
Step by Step Solution
- Step 1: Write the proportion equation
368,814.12 : 509,012.94 = 215,899.08 : x - Step 2: Convert to fraction form
368,814.12/509,012.94 = 215,899.08/x - Step 3: Cross multiply
368,814.12x = 509,012.94 × 215,899.08 - Step 4: Simplify right side
368,814.12x = 109,895,425,454.10 - Step 5: Solve for x
x = 109,895,425,454.10/368,814.12 - Step 6: Final answer
x = 297,969.68
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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.