Finding the Fourth Proportional to 268,649,987.80, 402,303,135.30 and 214,902,275.80
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Solution
The fourth proportional to 268,649,987.80, 402,303,135.30 and 214,902,275.80 is: 321,815,980.88
Step by Step Solution
- Step 1: Write the proportion equation
268,649,987.80 : 402,303,135.30 = 214,902,275.80 : x - Step 2: Convert to fraction form
268,649,987.80/402,303,135.30 = 214,902,275.80/x - Step 3: Cross multiply
268,649,987.80x = 402,303,135.30 × 214,902,275.80 - Step 4: Simplify right side
268,649,987.80x = 86,455,859,337,445,328 - Step 5: Solve for x
x = 86,455,859,337,445,328/268,649,987.80 - Step 6: Final answer
x = 321,815,980.88
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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.