Finding the Fourth Proportional to 307,875.84, 461,831.68 and 86,277.12
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Solution
The fourth proportional to 307,875.84, 461,831.68 and 86,277.12 is: 129,420.70
Step by Step Solution
- Step 1: Write the proportion equation
307,875.84 : 461,831.68 = 86,277.12 : x - Step 2: Convert to fraction form
307,875.84/461,831.68 = 86,277.12/x - Step 3: Cross multiply
307,875.84x = 461,831.68 × 86,277.12 - Step 4: Simplify right side
307,875.84x = 39,845,507,275.16 - Step 5: Solve for x
x = 39,845,507,275.16/307,875.84 - Step 6: Final answer
x = 129,420.70
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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.