Finding the Fourth Proportional to 420,302,313.21, 580,018,316.99 and 234,669,971.37
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Solution
The fourth proportional to 420,302,313.21, 580,018,316.99 and 234,669,971.37 is: 323,845,188.48
Step by Step Solution
- Step 1: Write the proportion equation
420,302,313.21 : 580,018,316.99 = 234,669,971.37 : x - Step 2: Convert to fraction form
420,302,313.21/580,018,316.99 = 234,669,971.37/x - Step 3: Cross multiply
420,302,313.21x = 580,018,316.99 × 234,669,971.37 - Step 4: Simplify right side
420,302,313.21x = 136,112,881,840,945,536 - Step 5: Solve for x
x = 136,112,881,840,945,536/420,302,313.21 - Step 6: Final answer
x = 323,845,188.48
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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.