Finding the Fourth Proportional to 251,607.12, 347,223.12 and 138,430.08
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Solution
The fourth proportional to 251,607.12, 347,223.12 and 138,430.08 is: 191,036.42
Step by Step Solution
- Step 1: Write the proportion equation
251,607.12 : 347,223.12 = 138,430.08 : x - Step 2: Convert to fraction form
251,607.12/347,223.12 = 138,430.08/x - Step 3: Cross multiply
251,607.12x = 347,223.12 × 138,430.08 - Step 4: Simplify right side
251,607.12x = 48,066,124,279.45 - Step 5: Solve for x
x = 48,066,124,279.45/251,607.12 - Step 6: Final answer
x = 191,036.42
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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.