Finding the Fourth Proportional to 312,094,052.32, 430,689,784.16 and 172,873,782.08
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Solution
The fourth proportional to 312,094,052.32, 430,689,784.16 and 172,873,782.08 is: 238,565,814.82
Step by Step Solution
- Step 1: Write the proportion equation
312,094,052.32 : 430,689,784.16 = 172,873,782.08 : x - Step 2: Convert to fraction form
312,094,052.32/430,689,784.16 = 172,873,782.08/x - Step 3: Cross multiply
312,094,052.32x = 430,689,784.16 × 172,873,782.08 - Step 4: Simplify right side
312,094,052.32x = 74,454,971,890,958,080 - Step 5: Solve for x
x = 74,454,971,890,958,080/312,094,052.32 - Step 6: Final answer
x = 238,565,814.82
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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.