Finding the Fourth Proportional to 351,572,989.13, 485,126,132.29 and 192,761,321.12
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Solution
The fourth proportional to 351,572,989.13, 485,126,132.29 and 192,761,321.12 is: 265,986,173.74
Step by Step Solution
- Step 1: Write the proportion equation
351,572,989.13 : 485,126,132.29 = 192,761,321.12 : x - Step 2: Convert to fraction form
351,572,989.13/485,126,132.29 = 192,761,321.12/x - Step 3: Cross multiply
351,572,989.13x = 485,126,132.29 × 192,761,321.12 - Step 4: Simplify right side
351,572,989.13x = 93,513,554,168,843,488 - Step 5: Solve for x
x = 93,513,554,168,843,488/351,572,989.13 - Step 6: Final answer
x = 265,986,173.74
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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.