Finding the Fourth Proportional to 321,646,719.68, 482,674,138.28 and 137,415,581.78
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Solution
The fourth proportional to 321,646,719.68, 482,674,138.28 and 137,415,581.78 is: 206,210,551.71
Step by Step Solution
- Step 1: Write the proportion equation
321,646,719.68 : 482,674,138.28 = 137,415,581.78 : x - Step 2: Convert to fraction form
321,646,719.68/482,674,138.28 = 137,415,581.78/x - Step 3: Cross multiply
321,646,719.68x = 482,674,138.28 × 137,415,581.78 - Step 4: Simplify right side
321,646,719.68x = 66,326,947,518,805,920 - Step 5: Solve for x
x = 66,326,947,518,805,920/321,646,719.68 - Step 6: Final answer
x = 206,210,551.71
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.