Finding the Fourth Proportional to 291,868,995.90, 402,761,491.70 and 166,403,649
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Solution
The fourth proportional to 291,868,995.90, 402,761,491.70 and 166,403,649 is: 229,626,931.39
Step by Step Solution
- Step 1: Write the proportion equation
291,868,995.90 : 402,761,491.70 = 166,403,649 : x - Step 2: Convert to fraction form
291,868,995.90/402,761,491.70 = 166,403,649/x - Step 3: Cross multiply
291,868,995.90x = 402,761,491.70 × 166,403,649 - Step 4: Simplify right side
291,868,995.90x = 67,020,981,895,563,208 - Step 5: Solve for x
x = 67,020,981,895,563,208/291,868,995.90 - Step 6: Final answer
x = 229,626,931.39
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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.