Finding the Fourth Proportional to 317,956,201.80, 438,826,027.86 and 178,738,430.28
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Solution
The fourth proportional to 317,956,201.80, 438,826,027.86 and 178,738,430.28 is: 246,685,156.45
Step by Step Solution
- Step 1: Write the proportion equation
317,956,201.80 : 438,826,027.86 = 178,738,430.28 : x - Step 2: Convert to fraction form
317,956,201.80/438,826,027.86 = 178,738,430.28/x - Step 3: Cross multiply
317,956,201.80x = 438,826,027.86 × 178,738,430.28 - Step 4: Simplify right side
317,956,201.80x = 78,435,075,385,703,952 - Step 5: Solve for x
x = 78,435,075,385,703,952/317,956,201.80 - Step 6: Final answer
x = 246,685,156.45
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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.