Finding the Fourth Proportional to 310,674,489.93, 428,739,885.53 and 169,554,761.63
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Solution
The fourth proportional to 310,674,489.93, 428,739,885.53 and 169,554,761.63 is: 233,990,531.72
Step by Step Solution
- Step 1: Write the proportion equation
310,674,489.93 : 428,739,885.53 = 169,554,761.63 : x - Step 2: Convert to fraction form
310,674,489.93/428,739,885.53 = 169,554,761.63/x - Step 3: Cross multiply
310,674,489.93x = 428,739,885.53 × 169,554,761.63 - Step 4: Simplify right side
310,674,489.93x = 72,694,889,091,564,768 - Step 5: Solve for x
x = 72,694,889,091,564,768/310,674,489.93 - Step 6: Final answer
x = 233,990,531.72
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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.