Finding the Fourth Proportional to 425,690.99, 638,602.10 and 145,142.63
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Solution
The fourth proportional to 425,690.99, 638,602.10 and 145,142.63 is: 217,736.31
Step by Step Solution
- Step 1: Write the proportion equation
425,690.99 : 638,602.10 = 145,142.63 : x - Step 2: Convert to fraction form
425,690.99/638,602.10 = 145,142.63/x - Step 3: Cross multiply
425,690.99x = 638,602.10 × 145,142.63 - Step 4: Simplify right side
425,690.99x = 92,688,384,398.80 - Step 5: Solve for x
x = 92,688,384,398.80/425,690.99 - Step 6: Final answer
x = 217,736.31
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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.