Finding the Fourth Proportional to 299,621,657.80, 449,432,486.70 and 84,210,905.80
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Solution
The fourth proportional to 299,621,657.80, 449,432,486.70 and 84,210,905.80 is: 126,316,358.70
Step by Step Solution
- Step 1: Write the proportion equation
299,621,657.80 : 449,432,486.70 = 84,210,905.80 : x - Step 2: Convert to fraction form
299,621,657.80/449,432,486.70 = 84,210,905.80/x - Step 3: Cross multiply
299,621,657.80x = 449,432,486.70 × 84,210,905.80 - Step 4: Simplify right side
299,621,657.80x = 37,847,116,800,953,448 - Step 5: Solve for x
x = 37,847,116,800,953,448/299,621,657.80 - Step 6: Final answer
x = 126,316,358.70
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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.