Finding the Fourth Proportional to 398,835.10, 550,595.57 and 307,987.12
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Solution
The fourth proportional to 398,835.10, 550,595.57 and 307,987.12 is: 425,179.09
Step by Step Solution
- Step 1: Write the proportion equation
398,835.10 : 550,595.57 = 307,987.12 : x - Step 2: Convert to fraction form
398,835.10/550,595.57 = 307,987.12/x - Step 3: Cross multiply
398,835.10x = 550,595.57 × 307,987.12 - Step 4: Simplify right side
398,835.10x = 169,576,343,889.06 - Step 5: Solve for x
x = 169,576,343,889.06/398,835.10 - Step 6: Final answer
x = 425,179.09
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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.