Finding the Fourth Proportional to 402,445.07, 555,142.93 and 251,279.63
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Solution
The fourth proportional to 402,445.07, 555,142.93 and 251,279.63 is: 346,621.49
Step by Step Solution
- Step 1: Write the proportion equation
402,445.07 : 555,142.93 = 251,279.63 : x - Step 2: Convert to fraction form
402,445.07/555,142.93 = 251,279.63/x - Step 3: Cross multiply
402,445.07x = 555,142.93 × 251,279.63 - Step 4: Simplify right side
402,445.07x = 139,496,110,047.52 - Step 5: Solve for x
x = 139,496,110,047.52/402,445.07 - Step 6: Final answer
x = 346,621.49
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1.5x scale
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.