Finding the Fourth Proportional to 388,712.97, 581,752.80 and 239,048.19
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Solution
The fourth proportional to 388,712.97, 581,752.80 and 239,048.19 is: 357,762.58
Step by Step Solution
- Step 1: Write the proportion equation
388,712.97 : 581,752.80 = 239,048.19 : x - Step 2: Convert to fraction form
388,712.97/581,752.80 = 239,048.19/x - Step 3: Cross multiply
388,712.97x = 581,752.80 × 239,048.19 - Step 4: Simplify right side
388,712.97x = 139,066,953,867.43 - Step 5: Solve for x
x = 139,066,953,867.43/388,712.97 - Step 6: Final answer
x = 357,762.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.