Finding the Fourth Proportional to 368,929.05, 509,123.78 and 207,786.79
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Solution
The fourth proportional to 368,929.05, 509,123.78 and 207,786.79 is: 286,746.72
Step by Step Solution
- Step 1: Write the proportion equation
368,929.05 : 509,123.78 = 207,786.79 : x - Step 2: Convert to fraction form
368,929.05/509,123.78 = 207,786.79/x - Step 3: Cross multiply
368,929.05x = 509,123.78 × 207,786.79 - Step 4: Simplify right side
368,929.05x = 105,789,193,471.72 - Step 5: Solve for x
x = 105,789,193,471.72/368,929.05 - Step 6: Final answer
x = 286,746.72
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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.