Finding the Fourth Proportional to 346,900.81, 478,803.11 and 225,831.23
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Solution
The fourth proportional to 346,900.81, 478,803.11 and 225,831.23 is: 311,699.17
Step by Step Solution
- Step 1: Write the proportion equation
346,900.81 : 478,803.11 = 225,831.23 : x - Step 2: Convert to fraction form
346,900.81/478,803.11 = 225,831.23/x - Step 3: Cross multiply
346,900.81x = 478,803.11 × 225,831.23 - Step 4: Simplify right side
346,900.81x = 108,128,695,259.13 - Step 5: Solve for x
x = 108,128,695,259.13/346,900.81 - Step 6: Final answer
x = 311,699.17
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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.