Finding the Fourth Proportional to 217,485,641.72, 326,127,311.94 and 79,214,987
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Solution
The fourth proportional to 217,485,641.72, 326,127,311.94 and 79,214,987 is: 118,785,638.31
Step by Step Solution
- Step 1: Write the proportion equation
217,485,641.72 : 326,127,311.94 = 79,214,987 : x - Step 2: Convert to fraction form
217,485,641.72/326,127,311.94 = 79,214,987/x - Step 3: Cross multiply
217,485,641.72x = 326,127,311.94 × 79,214,987 - Step 4: Simplify right side
217,485,641.72x = 25,834,170,775,672,044 - Step 5: Solve for x
x = 25,834,170,775,672,044/217,485,641.72 - Step 6: Final answer
x = 118,785,638.31
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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.