Finding the Fourth Proportional to 400,829.78, 553,155.83 and 226,385.99
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Solution
The fourth proportional to 400,829.78, 553,155.83 and 226,385.99 is: 312,418.72
Step by Step Solution
- Step 1: Write the proportion equation
400,829.78 : 553,155.83 = 226,385.99 : x - Step 2: Convert to fraction form
400,829.78/553,155.83 = 226,385.99/x - Step 3: Cross multiply
400,829.78x = 553,155.83 × 226,385.99 - Step 4: Simplify right side
400,829.78x = 125,226,726,301.11 - Step 5: Solve for x
x = 125,226,726,301.11/400,829.78 - Step 6: Final answer
x = 312,418.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.