Finding the Fourth Proportional to 212,958,534.60, 319,217,352.30 and 115,708,768.20
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Solution
The fourth proportional to 212,958,534.60, 319,217,352.30 and 115,708,768.20 is: 173,443,373.34
Step by Step Solution
- Step 1: Write the proportion equation
212,958,534.60 : 319,217,352.30 = 115,708,768.20 : x - Step 2: Convert to fraction form
212,958,534.60/319,217,352.30 = 115,708,768.20/x - Step 3: Cross multiply
212,958,534.60x = 319,217,352.30 × 115,708,768.20 - Step 4: Simplify right side
212,958,534.60x = 36,936,246,622,698,440 - Step 5: Solve for x
x = 36,936,246,622,698,440/212,958,534.60 - Step 6: Final answer
x = 173,443,373.34
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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.