Finding the Fourth Proportional to 425,718.36, 638,626.95 and 141,434.28
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Solution
The fourth proportional to 425,718.36, 638,626.95 and 141,434.28 is: 212,167.84
Step by Step Solution
- Step 1: Write the proportion equation
425,718.36 : 638,626.95 = 141,434.28 : x - Step 2: Convert to fraction form
425,718.36/638,626.95 = 141,434.28/x - Step 3: Cross multiply
425,718.36x = 638,626.95 × 141,434.28 - Step 4: Simplify right side
425,718.36x = 90,323,742,861.85 - Step 5: Solve for x
x = 90,323,742,861.85/425,718.36 - Step 6: Final answer
x = 212,167.84
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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.