Finding the Fourth Proportional to 454,321.80, 681,482.70 and 138,737.70
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Solution
The fourth proportional to 454,321.80, 681,482.70 and 138,737.70 is: 208,106.55
Step by Step Solution
- Step 1: Write the proportion equation
454,321.80 : 681,482.70 = 138,737.70 : x - Step 2: Convert to fraction form
454,321.80/681,482.70 = 138,737.70/x - Step 3: Cross multiply
454,321.80x = 681,482.70 × 138,737.70 - Step 4: Simplify right side
454,321.80x = 94,547,342,387.79 - Step 5: Solve for x
x = 94,547,342,387.79/454,321.80 - Step 6: Final answer
x = 208,106.55
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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.