Finding the Fourth Proportional to 402,020.99, 554,789.39 and 238,710.09
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Solution
The fourth proportional to 402,020.99, 554,789.39 and 238,710.09 is: 329,420.17
Step by Step Solution
- Step 1: Write the proportion equation
402,020.99 : 554,789.39 = 238,710.09 : x - Step 2: Convert to fraction form
402,020.99/554,789.39 = 238,710.09/x - Step 3: Cross multiply
402,020.99x = 554,789.39 × 238,710.09 - Step 4: Simplify right side
402,020.99x = 132,433,822,984.17 - Step 5: Solve for x
x = 132,433,822,984.17/402,020.99 - Step 6: Final answer
x = 329,420.17
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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.