Finding the Fourth Proportional to 351,803,883.15, 485,287,652.97 and 219,415,036.68
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Solution
The fourth proportional to 351,803,883.15, 485,287,652.97 and 219,415,036.68 is: 302,666,949.62
Step by Step Solution
- Step 1: Write the proportion equation
351,803,883.15 : 485,287,652.97 = 219,415,036.68 : x - Step 2: Convert to fraction form
351,803,883.15/485,287,652.97 = 219,415,036.68/x - Step 3: Cross multiply
351,803,883.15x = 485,287,652.97 × 219,415,036.68 - Step 4: Simplify right side
351,803,883.15x = 106,479,408,176,763,664 - Step 5: Solve for x
x = 106,479,408,176,763,664/351,803,883.15 - Step 6: Final answer
x = 302,666,949.62
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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.