Finding the Fourth Proportional to 258,871,315.34, 388,308,424.62 and 86,347,655.21
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Solution
The fourth proportional to 258,871,315.34, 388,308,424.62 and 86,347,655.21 is: 129,521,967.00
Step by Step Solution
- Step 1: Write the proportion equation
258,871,315.34 : 388,308,424.62 = 86,347,655.21 : x - Step 2: Convert to fraction form
258,871,315.34/388,308,424.62 = 86,347,655.21/x - Step 3: Cross multiply
258,871,315.34x = 388,308,424.62 × 86,347,655.21 - Step 4: Simplify right side
258,871,315.34x = 33,529,521,962,284,492 - Step 5: Solve for x
x = 33,529,521,962,284,492/258,871,315.34 - Step 6: Final answer
x = 129,521,967.00
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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.