Finding the Fourth Proportional to 432,871.79, 649,378.76 and 133,345.80
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Solution
The fourth proportional to 432,871.79, 649,378.76 and 133,345.80 is: 200,040.60
Step by Step Solution
- Step 1: Write the proportion equation
432,871.79 : 649,378.76 = 133,345.80 : x - Step 2: Convert to fraction form
432,871.79/649,378.76 = 133,345.80/x - Step 3: Cross multiply
432,871.79x = 649,378.76 × 133,345.80 - Step 4: Simplify right side
432,871.79x = 86,591,929,588.48 - Step 5: Solve for x
x = 86,591,929,588.48/432,871.79 - Step 6: Final answer
x = 200,040.60
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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.