Finding the Fourth Proportional to 425,631.90, 638,308.94 and 141,246.06
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Solution
The fourth proportional to 425,631.90, 638,308.94 and 141,246.06 is: 211,822.99
Step by Step Solution
- Step 1: Write the proportion equation
425,631.90 : 638,308.94 = 141,246.06 : x - Step 2: Convert to fraction form
425,631.90/638,308.94 = 141,246.06/x - Step 3: Cross multiply
425,631.90x = 638,308.94 × 141,246.06 - Step 4: Simplify right side
425,631.90x = 90,158,618,940.00 - Step 5: Solve for x
x = 90,158,618,940.00/425,631.90 - Step 6: Final answer
x = 211,822.99
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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.