Finding the Fourth Proportional to 287,609,746.80, 431,414,620.20 and 199,603,117.20
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Solution
The fourth proportional to 287,609,746.80, 431,414,620.20 and 199,603,117.20 is: 299,404,675.80
Step by Step Solution
- Step 1: Write the proportion equation
287,609,746.80 : 431,414,620.20 = 199,603,117.20 : x - Step 2: Convert to fraction form
287,609,746.80/431,414,620.20 = 199,603,117.20/x - Step 3: Cross multiply
287,609,746.80x = 431,414,620.20 × 199,603,117.20 - Step 4: Simplify right side
287,609,746.80x = 86,111,702,997,574,080 - Step 5: Solve for x
x = 86,111,702,997,574,080/287,609,746.80 - Step 6: Final answer
x = 299,404,675.80
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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.