Finding the Fourth Proportional to 312,102,449.76, 430,697,948.19 and 169,044,653.78
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Solution
The fourth proportional to 312,102,449.76, 430,697,948.19 and 169,044,653.78 is: 233,279,763.08
Step by Step Solution
- Step 1: Write the proportion equation
312,102,449.76 : 430,697,948.19 = 169,044,653.78 : x - Step 2: Convert to fraction form
312,102,449.76/430,697,948.19 = 169,044,653.78/x - Step 3: Cross multiply
312,102,449.76x = 430,697,948.19 × 169,044,653.78 - Step 4: Simplify right side
312,102,449.76x = 72,807,185,536,787,456 - Step 5: Solve for x
x = 72,807,185,536,787,456/312,102,449.76 - Step 6: Final answer
x = 233,279,763.08
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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.