Finding the Fourth Proportional to 283,135.14, 390,726.56 and 155,810.74
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Solution
The fourth proportional to 283,135.14, 390,726.56 and 155,810.74 is: 215,018.85
Step by Step Solution
- Step 1: Write the proportion equation
283,135.14 : 390,726.56 = 155,810.74 : x - Step 2: Convert to fraction form
283,135.14/390,726.56 = 155,810.74/x - Step 3: Cross multiply
283,135.14x = 390,726.56 × 155,810.74 - Step 4: Simplify right side
283,135.14x = 60,879,391,718.57 - Step 5: Solve for x
x = 60,879,391,718.57/283,135.14 - Step 6: Final answer
x = 215,018.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.