Finding the Fourth Proportional to 371,785,459.84, 513,171,980.80 and 248,025,831.68
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Solution
The fourth proportional to 371,785,459.84, 513,171,980.80 and 248,025,831.68 is: 342,347,727.60
Step by Step Solution
- Step 1: Write the proportion equation
371,785,459.84 : 513,171,980.80 = 248,025,831.68 : x - Step 2: Convert to fraction form
371,785,459.84/513,171,980.80 = 248,025,831.68/x - Step 3: Cross multiply
371,785,459.84x = 513,171,980.80 × 248,025,831.68 - Step 4: Simplify right side
371,785,459.84x = 127,279,907,332,792,992 - Step 5: Solve for x
x = 127,279,907,332,792,992/371,785,459.84 - Step 6: Final answer
x = 342,347,727.60
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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.