Finding the Fourth Proportional to 221,872,615.47, 332,161,337.91 and 129,473,206.83
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Solution
The fourth proportional to 221,872,615.47, 332,161,337.91 and 129,473,206.83 is: 193,831,913.47
Step by Step Solution
- Step 1: Write the proportion equation
221,872,615.47 : 332,161,337.91 = 129,473,206.83 : x - Step 2: Convert to fraction form
221,872,615.47/332,161,337.91 = 129,473,206.83/x - Step 3: Cross multiply
221,872,615.47x = 332,161,337.91 × 129,473,206.83 - Step 4: Simplify right side
221,872,615.47x = 43,005,993,604,150,952 - Step 5: Solve for x
x = 43,005,993,604,150,952/221,872,615.47 - Step 6: Final answer
x = 193,831,913.47
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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.