Finding the Fourth Proportional to 430,638,711.20, 645,958,066.80 and 201,056,199.20
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Solution
The fourth proportional to 430,638,711.20, 645,958,066.80 and 201,056,199.20 is: 301,584,298.80
Step by Step Solution
- Step 1: Write the proportion equation
430,638,711.20 : 645,958,066.80 = 201,056,199.20 : x - Step 2: Convert to fraction form
430,638,711.20/645,958,066.80 = 201,056,199.20/x - Step 3: Cross multiply
430,638,711.20x = 645,958,066.80 × 201,056,199.20 - Step 4: Simplify right side
430,638,711.20x = 129,873,873,753,387,696 - Step 5: Solve for x
x = 129,873,873,753,387,696/430,638,711.20 - Step 6: Final answer
x = 301,584,298.80
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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.