Finding the Fourth Proportional to 384,128,708.12, 530,097,643.16 and 210,288,452.12
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Solution
The fourth proportional to 384,128,708.12, 530,097,643.16 and 210,288,452.12 is: 290,198,078.13
Step by Step Solution
- Step 1: Write the proportion equation
384,128,708.12 : 530,097,643.16 = 210,288,452.12 : x - Step 2: Convert to fraction form
384,128,708.12/530,097,643.16 = 210,288,452.12/x - Step 3: Cross multiply
384,128,708.12x = 530,097,643.16 × 210,288,452.12 - Step 4: Simplify right side
384,128,708.12x = 111,473,412,852,576,512 - Step 5: Solve for x
x = 111,473,412,852,576,512/384,128,708.12 - Step 6: Final answer
x = 290,198,078.13
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.