Finding the Fourth Proportional to 201,937,412.40, 278,695,772.88 and 117,183,201.72
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Solution
The fourth proportional to 201,937,412.40, 278,695,772.88 and 117,183,201.72 is: 161,725,668.28
Step by Step Solution
- Step 1: Write the proportion equation
201,937,412.40 : 278,695,772.88 = 117,183,201.72 : x - Step 2: Convert to fraction form
201,937,412.40/278,695,772.88 = 117,183,201.72/x - Step 3: Cross multiply
201,937,412.40x = 278,695,772.88 × 117,183,201.72 - Step 4: Simplify right side
201,937,412.40x = 32,658,462,971,908,344 - Step 5: Solve for x
x = 32,658,462,971,908,344/201,937,412.40 - Step 6: Final answer
x = 161,725,668.28
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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.