Finding the Fourth Proportional to 328,128,813.60, 492,193,220.40 and 274,779,232.80
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Solution
The fourth proportional to 328,128,813.60, 492,193,220.40 and 274,779,232.80 is: 412,168,849.20
Step by Step Solution
- Step 1: Write the proportion equation
328,128,813.60 : 492,193,220.40 = 274,779,232.80 : x - Step 2: Convert to fraction form
328,128,813.60/492,193,220.40 = 274,779,232.80/x - Step 3: Cross multiply
328,128,813.60x = 492,193,220.40 × 274,779,232.80 - Step 4: Simplify right side
328,128,813.60x = 135,244,475,490,873,312 - Step 5: Solve for x
x = 135,244,475,490,873,312/328,128,813.60 - Step 6: Final answer
x = 412,168,849.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.