Finding the Fourth Proportional to 251,492,122.68, 347,059,145.98 and 139,980,570.40
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Solution
The fourth proportional to 251,492,122.68, 347,059,145.98 and 139,980,570.40 is: 193,173,196.44
Step by Step Solution
- Step 1: Write the proportion equation
251,492,122.68 : 347,059,145.98 = 139,980,570.40 : x - Step 2: Convert to fraction form
251,492,122.68/347,059,145.98 = 139,980,570.40/x - Step 3: Cross multiply
251,492,122.68x = 347,059,145.98 × 139,980,570.40 - Step 4: Simplify right side
251,492,122.68x = 48,581,537,216,817,272 - Step 5: Solve for x
x = 48,581,537,216,817,272/251,492,122.68 - Step 6: Final answer
x = 193,173,196.44
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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.