Finding the Fourth Proportional to 279,167,519.64, 385,254,028.02 and 153,731,380.08
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Solution
The fourth proportional to 279,167,519.64, 385,254,028.02 and 153,731,380.08 is: 212,150,874.45
Step by Step Solution
- Step 1: Write the proportion equation
279,167,519.64 : 385,254,028.02 = 153,731,380.08 : x - Step 2: Convert to fraction form
279,167,519.64/385,254,028.02 = 153,731,380.08/x - Step 3: Cross multiply
279,167,519.64x = 385,254,028.02 × 153,731,380.08 - Step 4: Simplify right side
279,167,519.64x = 59,225,633,408,893,592 - Step 5: Solve for x
x = 59,225,633,408,893,592/279,167,519.64 - Step 6: Final answer
x = 212,150,874.45
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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.