Finding the Fourth Proportional to 280,237.51, 386,737.10 and 152,920.09
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Solution
The fourth proportional to 280,237.51, 386,737.10 and 152,920.09 is: 211,034.82
Step by Step Solution
- Step 1: Write the proportion equation
280,237.51 : 386,737.10 = 152,920.09 : x - Step 2: Convert to fraction form
280,237.51/386,737.10 = 152,920.09/x - Step 3: Cross multiply
280,237.51x = 386,737.10 × 152,920.09 - Step 4: Simplify right side
280,237.51x = 59,139,872,138.34 - Step 5: Solve for x
x = 59,139,872,138.34/280,237.51 - Step 6: Final answer
x = 211,034.82
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1.5x scale
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.