Finding the Fourth Proportional to 279,478,386.99, 385,681,753.98 and 162,073,425.42
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Solution
The fourth proportional to 279,478,386.99, 385,681,753.98 and 162,073,425.42 is: 223,662,243.31
Step by Step Solution
- Step 1: Write the proportion equation
279,478,386.99 : 385,681,753.98 = 162,073,425.42 : x - Step 2: Convert to fraction form
279,478,386.99/385,681,753.98 = 162,073,425.42/x - Step 3: Cross multiply
279,478,386.99x = 385,681,753.98 × 162,073,425.42 - Step 4: Simplify right side
279,478,386.99x = 62,508,762,989,532,320 - Step 5: Solve for x
x = 62,508,762,989,532,320/279,478,386.99 - Step 6: Final answer
x = 223,662,243.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.