Finding the Fourth Proportional to 420,237.48, 579,904.20 and 238,923.84
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Solution
The fourth proportional to 420,237.48, 579,904.20 and 238,923.84 is: 329,701.53
Step by Step Solution
- Step 1: Write the proportion equation
420,237.48 : 579,904.20 = 238,923.84 : x - Step 2: Convert to fraction form
420,237.48/579,904.20 = 238,923.84/x - Step 3: Cross multiply
420,237.48x = 579,904.20 × 238,923.84 - Step 4: Simplify right side
420,237.48x = 138,552,938,296.13 - Step 5: Solve for x
x = 138,552,938,296.13/420,237.48 - Step 6: Final answer
x = 329,701.53
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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.