Finding the Fourth Proportional to 312,140,971.24, 430,748,903.46 and 172,911,302.44
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Solution
The fourth proportional to 312,140,971.24, 430,748,903.46 and 172,911,302.44 is: 238,614,474.82
Step by Step Solution
- Step 1: Write the proportion equation
312,140,971.24 : 430,748,903.46 = 172,911,302.44 : x - Step 2: Convert to fraction form
312,140,971.24/430,748,903.46 = 172,911,302.44/x - Step 3: Cross multiply
312,140,971.24x = 430,748,903.46 × 172,911,302.44 - Step 4: Simplify right side
312,140,971.24x = 74,481,353,921,870,416 - Step 5: Solve for x
x = 74,481,353,921,870,416/312,140,971.24 - Step 6: Final answer
x = 238,614,474.82
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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.