Finding the Fourth Proportional to 420,545.36, 580,332.33 and 239,240.23
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Solution
The fourth proportional to 420,545.36, 580,332.33 and 239,240.23 is: 330,139.98
Step by Step Solution
- Step 1: Write the proportion equation
420,545.36 : 580,332.33 = 239,240.23 : x - Step 2: Convert to fraction form
420,545.36/580,332.33 = 239,240.23/x - Step 3: Cross multiply
420,545.36x = 580,332.33 × 239,240.23 - Step 4: Simplify right side
420,545.36x = 138,838,838,654.81 - Step 5: Solve for x
x = 138,838,838,654.81/420,545.36 - Step 6: Final answer
x = 330,139.98
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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.