Finding the Fourth Proportional to 257,819.12, 386,739.16 and 122,813.79
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Solution
The fourth proportional to 257,819.12, 386,739.16 and 122,813.79 is: 184,225.67
Step by Step Solution
- Step 1: Write the proportion equation
257,819.12 : 386,739.16 = 122,813.79 : x - Step 2: Convert to fraction form
257,819.12/386,739.16 = 122,813.79/x - Step 3: Cross multiply
257,819.12x = 386,739.16 × 122,813.79 - Step 4: Simplify right side
257,819.12x = 47,496,900,223.71 - Step 5: Solve for x
x = 47,496,900,223.71/257,819.12 - Step 6: Final answer
x = 184,225.67
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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.