Finding the Fourth Proportional to 239,163,912.55, 330,046,197.38 and 129,155,615.83
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Solution
The fourth proportional to 239,163,912.55, 330,046,197.38 and 129,155,615.83 is: 178,234,748.80
Step by Step Solution
- Step 1: Write the proportion equation
239,163,912.55 : 330,046,197.38 = 129,155,615.83 : x - Step 2: Convert to fraction form
239,163,912.55/330,046,197.38 = 129,155,615.83/x - Step 3: Cross multiply
239,163,912.55x = 330,046,197.38 × 129,155,615.83 - Step 4: Simplify right side
239,163,912.55x = 42,627,319,874,963,632 - Step 5: Solve for x
x = 42,627,319,874,963,632/239,163,912.55 - Step 6: Final answer
x = 178,234,748.80
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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.