Finding the Fourth Proportional to 312,094,056.32, 430,689,789.68 and 172,873,786.08
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Solution
The fourth proportional to 312,094,056.32, 430,689,789.68 and 172,873,786.08 is: 238,565,820.34
Step by Step Solution
- Step 1: Write the proportion equation
312,094,056.32 : 430,689,789.68 = 172,873,786.08 : x - Step 2: Convert to fraction form
312,094,056.32/430,689,789.68 = 172,873,786.08/x - Step 3: Cross multiply
312,094,056.32x = 430,689,789.68 × 172,873,786.08 - Step 4: Simplify right side
312,094,056.32x = 74,454,974,567,980,512 - Step 5: Solve for x
x = 74,454,974,567,980,512/312,094,056.32 - Step 6: Final answer
x = 238,565,820.34
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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.