Finding the Fourth Proportional to 420,261.05, 579,957.50 and 238,972.99
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Solution
The fourth proportional to 420,261.05, 579,957.50 and 238,972.99 is: 329,781.16
Step by Step Solution
- Step 1: Write the proportion equation
420,261.05 : 579,957.50 = 238,972.99 : x - Step 2: Convert to fraction form
420,261.05/579,957.50 = 238,972.99/x - Step 3: Cross multiply
420,261.05x = 579,957.50 × 238,972.99 - Step 4: Simplify right side
420,261.05x = 138,594,177,847.93 - Step 5: Solve for x
x = 138,594,177,847.93/420,261.05 - Step 6: Final answer
x = 329,781.16
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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.