Finding the Fourth Proportional to 388,667,814.81, 583,001,722.20 and 129,883,035.03
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Solution
The fourth proportional to 388,667,814.81, 583,001,722.20 and 129,883,035.03 is: 194,824,552.55
Step by Step Solution
- Step 1: Write the proportion equation
388,667,814.81 : 583,001,722.20 = 129,883,035.03 : x - Step 2: Convert to fraction form
388,667,814.81/583,001,722.20 = 129,883,035.03/x - Step 3: Cross multiply
388,667,814.81x = 583,001,722.20 × 129,883,035.03 - Step 4: Simplify right side
388,667,814.81x = 75,722,033,109,908,000 - Step 5: Solve for x
x = 75,722,033,109,908,000/388,667,814.81 - Step 6: Final answer
x = 194,824,552.55
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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.