Finding the Fourth Proportional to 260,122.80, 390,184.20 and 73,134.30
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Solution
The fourth proportional to 260,122.80, 390,184.20 and 73,134.30 is: 109,701.45
Step by Step Solution
- Step 1: Write the proportion equation
260,122.80 : 390,184.20 = 73,134.30 : x - Step 2: Convert to fraction form
260,122.80/390,184.20 = 73,134.30/x - Step 3: Cross multiply
260,122.80x = 390,184.20 × 73,134.30 - Step 4: Simplify right side
260,122.80x = 28,535,848,338.06 - Step 5: Solve for x
x = 28,535,848,338.06/260,122.80 - Step 6: Final answer
x = 109,701.45
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1.5x scale
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.