Finding the Fourth Proportional to 290,430,132.68, 400,781,921.25 and 158,268,312.36
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Solution
The fourth proportional to 290,430,132.68, 400,781,921.25 and 158,268,312.36 is: 218,403,916.00
Step by Step Solution
- Step 1: Write the proportion equation
290,430,132.68 : 400,781,921.25 = 158,268,312.36 : x - Step 2: Convert to fraction form
290,430,132.68/400,781,921.25 = 158,268,312.36/x - Step 3: Cross multiply
290,430,132.68x = 400,781,921.25 × 158,268,312.36 - Step 4: Simplify right side
290,430,132.68x = 63,431,078,300,635,928 - Step 5: Solve for x
x = 63,431,078,300,635,928/290,430,132.68 - Step 6: Final answer
x = 218,403,916.00
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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.