Finding the Fourth Proportional to 426,686.23, 640,281.84 and 157,003.74
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Solution
The fourth proportional to 426,686.23, 640,281.84 and 157,003.74 is: 235,598.52
Step by Step Solution
- Step 1: Write the proportion equation
426,686.23 : 640,281.84 = 157,003.74 : x - Step 2: Convert to fraction form
426,686.23/640,281.84 = 157,003.74/x - Step 3: Cross multiply
426,686.23x = 640,281.84 × 157,003.74 - Step 4: Simplify right side
426,686.23x = 100,526,644,138.18 - Step 5: Solve for x
x = 100,526,644,138.18/426,686.23 - Step 6: Final answer
x = 235,598.52
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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.