Finding the Fourth Proportional to 357,467,831.80, 536,201,747.70 and 253,163,678.20
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Solution
The fourth proportional to 357,467,831.80, 536,201,747.70 and 253,163,678.20 is: 379,745,517.30
Step by Step Solution
- Step 1: Write the proportion equation
357,467,831.80 : 536,201,747.70 = 253,163,678.20 : x - Step 2: Convert to fraction form
357,467,831.80/536,201,747.70 = 253,163,678.20/x - Step 3: Cross multiply
357,467,831.80x = 536,201,747.70 × 253,163,678.20 - Step 4: Simplify right side
357,467,831.80x = 135,746,806,705,000,384 - Step 5: Solve for x
x = 135,746,806,705,000,384/357,467,831.80 - Step 6: Final answer
x = 379,745,517.30
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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.