Finding the Fourth Proportional to 307,545.80, 461,318.70 and 85,929.80
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Solution
The fourth proportional to 307,545.80, 461,318.70 and 85,929.80 is: 128,894.70
Step by Step Solution
- Step 1: Write the proportion equation
307,545.80 : 461,318.70 = 85,929.80 : x - Step 2: Convert to fraction form
307,545.80/461,318.70 = 85,929.80/x - Step 3: Cross multiply
307,545.80x = 461,318.70 × 85,929.80 - Step 4: Simplify right side
307,545.80x = 39,641,023,627.26 - Step 5: Solve for x
x = 39,641,023,627.26/307,545.80 - Step 6: Final answer
x = 128,894.70
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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.