Finding the Fourth Proportional to 260,038.40, 390,349.20 and 201,135.20
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Solution
The fourth proportional to 260,038.40, 390,349.20 and 201,135.20 is: 301,928.35
Step by Step Solution
- Step 1: Write the proportion equation
260,038.40 : 390,349.20 = 201,135.20 : x - Step 2: Convert to fraction form
260,038.40/390,349.20 = 201,135.20/x - Step 3: Cross multiply
260,038.40x = 390,349.20 × 201,135.20 - Step 4: Simplify right side
260,038.40x = 78,512,964,411.84 - Step 5: Solve for x
x = 78,512,964,411.84/260,038.40 - Step 6: Final answer
x = 301,928.35
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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.