Finding the Fourth Proportional to 318,761,638.06, 439,656,904.88 and 211,276,569.46
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Solution
The fourth proportional to 318,761,638.06, 439,656,904.88 and 211,276,569.46 is: 291,406,466.50
Step by Step Solution
- Step 1: Write the proportion equation
318,761,638.06 : 439,656,904.88 = 211,276,569.46 : x - Step 2: Convert to fraction form
318,761,638.06/439,656,904.88 = 211,276,569.46/x - Step 3: Cross multiply
318,761,638.06x = 439,656,904.88 × 211,276,569.46 - Step 4: Simplify right side
318,761,638.06x = 92,889,202,602,447,936 - Step 5: Solve for x
x = 92,889,202,602,447,936/318,761,638.06 - Step 6: Final answer
x = 291,406,466.50
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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.