Finding the Fourth Proportional to 307,392.60, 424,193.34 and 171,430.68
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Solution
The fourth proportional to 307,392.60, 424,193.34 and 171,430.68 is: 236,569.63
Step by Step Solution
- Step 1: Write the proportion equation
307,392.60 : 424,193.34 = 171,430.68 : x - Step 2: Convert to fraction form
307,392.60/424,193.34 = 171,430.68/x - Step 3: Cross multiply
307,392.60x = 424,193.34 × 171,430.68 - Step 4: Simplify right side
307,392.60x = 72,719,752,727.67 - Step 5: Solve for x
x = 72,719,752,727.67/307,392.60 - Step 6: Final answer
x = 236,569.63
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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.