Finding the Fourth Proportional to 307,290,228.12, 424,128,612.24 and 212,054,403.60
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Solution
The fourth proportional to 307,290,228.12, 424,128,612.24 and 212,054,403.60 is: 292,682,069.55
Step by Step Solution
- Step 1: Write the proportion equation
307,290,228.12 : 424,128,612.24 = 212,054,403.60 : x - Step 2: Convert to fraction form
307,290,228.12/424,128,612.24 = 212,054,403.60/x - Step 3: Cross multiply
307,290,228.12x = 424,128,612.24 × 212,054,403.60 - Step 4: Simplify right side
307,290,228.12x = 89,938,339,918,248,864 - Step 5: Solve for x
x = 89,938,339,918,248,864/307,290,228.12 - Step 6: Final answer
x = 292,682,069.55
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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.