Finding the Fourth Proportional to 268,661,251.20, 402,991,876.80 and 86,908,429.20
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Solution
The fourth proportional to 268,661,251.20, 402,991,876.80 and 86,908,429.20 is: 130,362,643.80
Step by Step Solution
- Step 1: Write the proportion equation
268,661,251.20 : 402,991,876.80 = 86,908,429.20 : x - Step 2: Convert to fraction form
268,661,251.20/402,991,876.80 = 86,908,429.20/x - Step 3: Cross multiply
268,661,251.20x = 402,991,876.80 × 86,908,429.20 - Step 4: Simplify right side
268,661,251.20x = 35,023,390,993,047,924 - Step 5: Solve for x
x = 35,023,390,993,047,924/268,661,251.20 - Step 6: Final answer
x = 130,362,643.80
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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.