Finding the Fourth Proportional to 358,319.80, 537,479.70 and 319,612.60
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Solution
The fourth proportional to 358,319.80, 537,479.70 and 319,612.60 is: 479,418.90
Step by Step Solution
- Step 1: Write the proportion equation
358,319.80 : 537,479.70 = 319,612.60 : x - Step 2: Convert to fraction form
358,319.80/537,479.70 = 319,612.60/x - Step 3: Cross multiply
358,319.80x = 537,479.70 × 319,612.60 - Step 4: Simplify right side
358,319.80x = 171,785,284,364.22 - Step 5: Solve for x
x = 171,785,284,364.22/358,319.80 - Step 6: Final answer
x = 479,418.90
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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.