Finding the Fourth Proportional to 287,528,034.30, 431,292,051.45 and 115,128,573.90
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Solution
The fourth proportional to 287,528,034.30, 431,292,051.45 and 115,128,573.90 is: 172,692,860.85
Step by Step Solution
- Step 1: Write the proportion equation
287,528,034.30 : 431,292,051.45 = 115,128,573.90 : x - Step 2: Convert to fraction form
287,528,034.30/431,292,051.45 = 115,128,573.90/x - Step 3: Cross multiply
287,528,034.30x = 431,292,051.45 × 115,128,573.90 - Step 4: Simplify right side
287,528,034.30x = 49,654,038,817,843,928 - Step 5: Solve for x
x = 49,654,038,817,843,928/287,528,034.30 - Step 6: Final answer
x = 172,692,860.85
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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.