Finding the Fourth Proportional to 312,705,953.36, 431,534,723.28 and 173,476,718.72
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Solution
The fourth proportional to 312,705,953.36, 431,534,723.28 and 173,476,718.72 is: 239,398,153.45
Step by Step Solution
- Step 1: Write the proportion equation
312,705,953.36 : 431,534,723.28 = 173,476,718.72 : x - Step 2: Convert to fraction form
312,705,953.36/431,534,723.28 = 173,476,718.72/x - Step 3: Cross multiply
312,705,953.36x = 431,534,723.28 × 173,476,718.72 - Step 4: Simplify right side
312,705,953.36x = 74,861,227,808,357,584 - Step 5: Solve for x
x = 74,861,227,808,357,584/312,705,953.36 - Step 6: Final answer
x = 239,398,153.45
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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.