Finding the Fourth Proportional to 420,349.67, 580,095.36 and 239,087.71
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Solution
The fourth proportional to 420,349.67, 580,095.36 and 239,087.71 is: 329,948.33
Step by Step Solution
- Step 1: Write the proportion equation
420,349.67 : 580,095.36 = 239,087.71 : x - Step 2: Convert to fraction form
420,349.67/580,095.36 = 239,087.71/x - Step 3: Cross multiply
420,349.67x = 580,095.36 × 239,087.71 - Step 4: Simplify right side
420,349.67x = 138,693,671,929.15 - Step 5: Solve for x
x = 138,693,671,929.15/420,349.67 - Step 6: Final answer
x = 329,948.33
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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.