Finding the Fourth Proportional to 239,167,342.90, 330,050,937.35 and 129,159,055.90
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Solution
The fourth proportional to 239,167,342.90, 330,050,937.35 and 129,159,055.90 is: 178,239,499.38
Step by Step Solution
- Step 1: Write the proportion equation
239,167,342.90 : 330,050,937.35 = 129,159,055.90 : x - Step 2: Convert to fraction form
239,167,342.90/330,050,937.35 = 129,159,055.90/x - Step 3: Cross multiply
239,167,342.90x = 330,050,937.35 × 129,159,055.90 - Step 4: Simplify right side
239,167,342.90x = 42,629,067,464,740,000 - Step 5: Solve for x
x = 42,629,067,464,740,000/239,167,342.90 - Step 6: Final answer
x = 178,239,499.38
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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.