Finding the Fourth Proportional to 211,774,420.72, 292,203,367.68 and 123,628,416.40
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Solution
The fourth proportional to 211,774,420.72, 292,203,367.68 and 123,628,416.40 is: 170,580,750.45
Step by Step Solution
- Step 1: Write the proportion equation
211,774,420.72 : 292,203,367.68 = 123,628,416.40 : x - Step 2: Convert to fraction form
211,774,420.72/292,203,367.68 = 123,628,416.40/x - Step 3: Cross multiply
211,774,420.72x = 292,203,367.68 × 123,628,416.40 - Step 4: Simplify right side
211,774,420.72x = 36,124,639,613,025,344 - Step 5: Solve for x
x = 36,124,639,613,025,344/211,774,420.72 - Step 6: Final answer
x = 170,580,750.45
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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.