Finding the Fourth Proportional to 230,400.18, 317,953.69 and 128,432.12
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Solution
The fourth proportional to 230,400.18, 317,953.69 and 128,432.12 is: 177,237.12
Step by Step Solution
- Step 1: Write the proportion equation
230,400.18 : 317,953.69 = 128,432.12 : x - Step 2: Convert to fraction form
230,400.18/317,953.69 = 128,432.12/x - Step 3: Cross multiply
230,400.18x = 317,953.69 × 128,432.12 - Step 4: Simplify right side
230,400.18x = 40,835,464,557.67 - Step 5: Solve for x
x = 40,835,464,557.67/230,400.18 - Step 6: Final answer
x = 177,237.12
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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.