Finding the Fourth Proportional to 420,534.11, 580,316.81 and 239,228.98
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Solution
The fourth proportional to 420,534.11, 580,316.81 and 239,228.98 is: 330,124.46
Step by Step Solution
- Step 1: Write the proportion equation
420,534.11 : 580,316.81 = 239,228.98 : x - Step 2: Convert to fraction form
420,534.11/580,316.81 = 239,228.98/x - Step 3: Cross multiply
420,534.11x = 580,316.81 × 239,228.98 - Step 4: Simplify right side
420,534.11x = 138,828,595,886.22 - Step 5: Solve for x
x = 138,828,595,886.22/420,534.11 - Step 6: Final answer
x = 330,124.46
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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.