Finding the Fourth Proportional to 314,928,312.80, 472,392,469.20 and 153,685,176.80
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Solution
The fourth proportional to 314,928,312.80, 472,392,469.20 and 153,685,176.80 is: 230,527,765.20
Step by Step Solution
- Step 1: Write the proportion equation
314,928,312.80 : 472,392,469.20 = 153,685,176.80 : x - Step 2: Convert to fraction form
314,928,312.80/472,392,469.20 = 153,685,176.80/x - Step 3: Cross multiply
314,928,312.80x = 472,392,469.20 × 153,685,176.80 - Step 4: Simplify right side
314,928,312.80x = 72,599,720,147,990,560 - Step 5: Solve for x
x = 72,599,720,147,990,560/314,928,312.80 - Step 6: Final answer
x = 230,527,765.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.