Finding the Fourth Proportional to 312,257,312.96, 430,915,094.74 and 173,028,074.67
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Solution
The fourth proportional to 312,257,312.96, 430,915,094.74 and 173,028,074.67 is: 238,778,744.63
Step by Step Solution
- Step 1: Write the proportion equation
312,257,312.96 : 430,915,094.74 = 173,028,074.67 : x - Step 2: Convert to fraction form
312,257,312.96/430,915,094.74 = 173,028,074.67/x - Step 3: Cross multiply
312,257,312.96x = 430,915,094.74 × 173,028,074.67 - Step 4: Simplify right side
312,257,312.96x = 74,560,409,189,319,120 - Step 5: Solve for x
x = 74,560,409,189,319,120/312,257,312.96 - Step 6: Final answer
x = 238,778,744.63
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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.