Finding the Fourth Proportional to 315,103,681.20, 472,336,657.20 and 185,644,653.60
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Solution
The fourth proportional to 315,103,681.20, 472,336,657.20 and 185,644,653.60 is: 278,279,119.99
Step by Step Solution
- Step 1: Write the proportion equation
315,103,681.20 : 472,336,657.20 = 185,644,653.60 : x - Step 2: Convert to fraction form
315,103,681.20/472,336,657.20 = 185,644,653.60/x - Step 3: Cross multiply
315,103,681.20x = 472,336,657.20 × 185,644,653.60 - Step 4: Simplify right side
315,103,681.20x = 87,686,775,108,475,936 - Step 5: Solve for x
x = 87,686,775,108,475,936/315,103,681.20 - Step 6: Final answer
x = 278,279,119.99
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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.