Finding the Fourth Proportional to 393,216,238.87, 589,920,390.38 and 130,900,283.08
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Solution
The fourth proportional to 393,216,238.87, 589,920,390.38 and 130,900,283.08 is: 196,382,393.35
Step by Step Solution
- Step 1: Write the proportion equation
393,216,238.87 : 589,920,390.38 = 130,900,283.08 : x - Step 2: Convert to fraction form
393,216,238.87/589,920,390.38 = 130,900,283.08/x - Step 3: Cross multiply
393,216,238.87x = 589,920,390.38 × 130,900,283.08 - Step 4: Simplify right side
393,216,238.87x = 77,220,746,094,255,952 - Step 5: Solve for x
x = 77,220,746,094,255,952/393,216,238.87 - Step 6: Final answer
x = 196,382,393.35
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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.