Finding the Fourth Proportional to 420,299.08, 579,988.96 and 239,055.10
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Solution
The fourth proportional to 420,299.08, 579,988.96 and 239,055.10 is: 329,882.52
Step by Step Solution
- Step 1: Write the proportion equation
420,299.08 : 579,988.96 = 239,055.10 : x - Step 2: Convert to fraction form
420,299.08/579,988.96 = 239,055.10/x - Step 3: Cross multiply
420,299.08x = 579,988.96 × 239,055.10 - Step 4: Simplify right side
420,299.08x = 138,649,318,831.70 - Step 5: Solve for x
x = 138,649,318,831.70/420,299.08 - Step 6: Final answer
x = 329,882.52
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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.