Finding the Fourth Proportional to 280,368,003.80, 420,552,005.70 and 159,435,651.80
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Solution
The fourth proportional to 280,368,003.80, 420,552,005.70 and 159,435,651.80 is: 239,153,477.70
Step by Step Solution
- Step 1: Write the proportion equation
280,368,003.80 : 420,552,005.70 = 159,435,651.80 : x - Step 2: Convert to fraction form
280,368,003.80/420,552,005.70 = 159,435,651.80/x - Step 3: Cross multiply
280,368,003.80x = 420,552,005.70 × 159,435,651.80 - Step 4: Simplify right side
280,368,003.80x = 67,050,983,144,576,816 - Step 5: Solve for x
x = 67,050,983,144,576,816/280,368,003.80 - Step 6: Final answer
x = 239,153,477.70
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1.5x scale
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.