Finding the Fourth Proportional to 210,571,802.31, 315,886,447.16 and 87,721,390.05
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Solution
The fourth proportional to 210,571,802.31, 315,886,447.16 and 87,721,390.05 is: 131,594,059.31
Step by Step Solution
- Step 1: Write the proportion equation
210,571,802.31 : 315,886,447.16 = 87,721,390.05 : x - Step 2: Convert to fraction form
210,571,802.31/315,886,447.16 = 87,721,390.05/x - Step 3: Cross multiply
210,571,802.31x = 315,886,447.16 × 87,721,390.05 - Step 4: Simplify right side
210,571,802.31x = 27,709,998,242,030,720 - Step 5: Solve for x
x = 27,709,998,242,030,720/210,571,802.31 - Step 6: Final answer
x = 131,594,059.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.