Finding the Fourth Proportional to 312,781.08, 468,808.64 and 143,946.91
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Solution
The fourth proportional to 312,781.08, 468,808.64 and 143,946.91 is: 215,753.32
Step by Step Solution
- Step 1: Write the proportion equation
312,781.08 : 468,808.64 = 143,946.91 : x - Step 2: Convert to fraction form
312,781.08/468,808.64 = 143,946.91/x - Step 3: Cross multiply
312,781.08x = 468,808.64 × 143,946.91 - Step 4: Simplify right side
312,781.08x = 67,483,555,109.30 - Step 5: Solve for x
x = 67,483,555,109.30/312,781.08 - Step 6: Final answer
x = 215,753.32
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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.