Finding the Fourth Proportional to 410,320.80, 615,135.60 and 213,328.80
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Solution
The fourth proportional to 410,320.80, 615,135.60 and 213,328.80 is: 319,813.52
Step by Step Solution
- Step 1: Write the proportion equation
410,320.80 : 615,135.60 = 213,328.80 : x - Step 2: Convert to fraction form
410,320.80/615,135.60 = 213,328.80/x - Step 3: Cross multiply
410,320.80x = 615,135.60 × 213,328.80 - Step 4: Simplify right side
410,320.80x = 131,226,139,385.28 - Step 5: Solve for x
x = 131,226,139,385.28/410,320.80 - Step 6: Final answer
x = 319,813.52
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1.5x scale
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.