Finding the Fourth Proportional to 287,488,230.70, 431,232,346.05 and 218,613,477.10
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Solution
The fourth proportional to 287,488,230.70, 431,232,346.05 and 218,613,477.10 is: 327,920,215.65
Step by Step Solution
- Step 1: Write the proportion equation
287,488,230.70 : 431,232,346.05 = 218,613,477.10 : x - Step 2: Convert to fraction form
287,488,230.70/431,232,346.05 = 218,613,477.10/x - Step 3: Cross multiply
287,488,230.70x = 431,232,346.05 × 218,613,477.10 - Step 4: Simplify right side
287,488,230.70x = 94,273,202,607,980,944 - Step 5: Solve for x
x = 94,273,202,607,980,944/287,488,230.70 - Step 6: Final answer
x = 327,920,215.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.