Finding the Fourth Proportional to 285,210,315.65, 393,624,991.86 and 167,729,968.19
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Solution
The fourth proportional to 285,210,315.65, 393,624,991.86 and 167,729,968.19 is: 231,487,795.99
Step by Step Solution
- Step 1: Write the proportion equation
285,210,315.65 : 393,624,991.86 = 167,729,968.19 : x - Step 2: Convert to fraction form
285,210,315.65/393,624,991.86 = 167,729,968.19/x - Step 3: Cross multiply
285,210,315.65x = 393,624,991.86 × 167,729,968.19 - Step 4: Simplify right side
285,210,315.65x = 66,022,707,363,466,808 - Step 5: Solve for x
x = 66,022,707,363,466,808/285,210,315.65 - Step 6: Final answer
x = 231,487,795.99
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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.