Finding the Fourth Proportional to 257,069,692.96, 354,754,891.36 and 139,593,977.12
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Solution
The fourth proportional to 257,069,692.96, 354,754,891.36 and 139,593,977.12 is: 192,638,990.69
Step by Step Solution
- Step 1: Write the proportion equation
257,069,692.96 : 354,754,891.36 = 139,593,977.12 : x - Step 2: Convert to fraction form
257,069,692.96/354,754,891.36 = 139,593,977.12/x - Step 3: Cross multiply
257,069,692.96x = 354,754,891.36 × 139,593,977.12 - Step 4: Simplify right side
257,069,692.96x = 49,521,646,187,715,928 - Step 5: Solve for x
x = 49,521,646,187,715,928/257,069,692.96 - Step 6: Final answer
x = 192,638,990.69
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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.