Finding the Fourth Proportional to 257,567.80, 386,351.70 and 68,027.80
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Solution
The fourth proportional to 257,567.80, 386,351.70 and 68,027.80 is: 102,041.70
Step by Step Solution
- Step 1: Write the proportion equation
257,567.80 : 386,351.70 = 68,027.80 : x - Step 2: Convert to fraction form
257,567.80/386,351.70 = 68,027.80/x - Step 3: Cross multiply
257,567.80x = 386,351.70 × 68,027.80 - Step 4: Simplify right side
257,567.80x = 26,282,656,177.26 - Step 5: Solve for x
x = 26,282,656,177.26/257,567.80 - Step 6: Final answer
x = 102,041.70
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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.