Finding the Fourth Proportional to 351,803,875.11, 485,287,641.92 and 219,415,028.70
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Solution
The fourth proportional to 351,803,875.11, 485,287,641.92 and 219,415,028.70 is: 302,666,938.64
Step by Step Solution
- Step 1: Write the proportion equation
351,803,875.11 : 485,287,641.92 = 219,415,028.70 : x - Step 2: Convert to fraction form
351,803,875.11/485,287,641.92 = 219,415,028.70/x - Step 3: Cross multiply
351,803,875.11x = 485,287,641.92 × 219,415,028.70 - Step 4: Simplify right side
351,803,875.11x = 106,479,401,879,632,128 - Step 5: Solve for x
x = 106,479,401,879,632,128/351,803,875.11 - Step 6: Final answer
x = 302,666,938.64
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.