Finding the Fourth Proportional to 388,048,957.30, 582,154,306.35 and 129,344,547.70
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Solution
The fourth proportional to 388,048,957.30, 582,154,306.35 and 129,344,547.70 is: 194,043,777.29
Step by Step Solution
- Step 1: Write the proportion equation
388,048,957.30 : 582,154,306.35 = 129,344,547.70 : x - Step 2: Convert to fraction form
388,048,957.30/582,154,306.35 = 129,344,547.70/x - Step 3: Cross multiply
388,048,957.30x = 582,154,306.35 × 129,344,547.70 - Step 4: Simplify right side
388,048,957.30x = 75,298,485,446,448,000 - Step 5: Solve for x
x = 75,298,485,446,448,000/388,048,957.30 - Step 6: Final answer
x = 194,043,777.29
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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.