Finding the Fourth Proportional to 239,580,853.42, 330,621,575.16 and 129,572,566.42
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Solution
The fourth proportional to 239,580,853.42, 330,621,575.16 and 129,572,566.42 is: 178,810,140.28
Step by Step Solution
- Step 1: Write the proportion equation
239,580,853.42 : 330,621,575.16 = 129,572,566.42 : x - Step 2: Convert to fraction form
239,580,853.42/330,621,575.16 = 129,572,566.42/x - Step 3: Cross multiply
239,580,853.42x = 330,621,575.16 × 129,572,566.42 - Step 4: Simplify right side
239,580,853.42x = 42,839,486,007,304,128 - Step 5: Solve for x
x = 42,839,486,007,304,128/239,580,853.42 - Step 6: Final answer
x = 178,810,140.28
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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.