Finding the Fourth Proportional to 319,018,538.40, 478,527,807.60 and 181,269,031.20
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Solution
The fourth proportional to 319,018,538.40, 478,527,807.60 and 181,269,031.20 is: 271,903,546.80
Step by Step Solution
- Step 1: Write the proportion equation
319,018,538.40 : 478,527,807.60 = 181,269,031.20 : x - Step 2: Convert to fraction form
319,018,538.40/478,527,807.60 = 181,269,031.20/x - Step 3: Cross multiply
319,018,538.40x = 478,527,807.60 × 181,269,031.20 - Step 4: Simplify right side
319,018,538.40x = 86,742,272,085,912,000 - Step 5: Solve for x
x = 86,742,272,085,912,000/319,018,538.40 - Step 6: Final answer
x = 271,903,546.80
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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.