Finding the Fourth Proportional to 400,927.18, 553,279.47 and 239,782.21
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Solution
The fourth proportional to 400,927.18, 553,279.47 and 239,782.21 is: 330,899.43
Step by Step Solution
- Step 1: Write the proportion equation
400,927.18 : 553,279.47 = 239,782.21 : x - Step 2: Convert to fraction form
400,927.18/553,279.47 = 239,782.21/x - Step 3: Cross multiply
400,927.18x = 553,279.47 × 239,782.21 - Step 4: Simplify right side
400,927.18x = 132,666,574,064.23 - Step 5: Solve for x
x = 132,666,574,064.23/400,927.18 - Step 6: Final answer
x = 330,899.43
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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.