Finding the Fourth Proportional to 260,541.20, 390,811.80 and 110,731.70
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Solution
The fourth proportional to 260,541.20, 390,811.80 and 110,731.70 is: 166,097.55
Step by Step Solution
- Step 1: Write the proportion equation
260,541.20 : 390,811.80 = 110,731.70 : x - Step 2: Convert to fraction form
260,541.20/390,811.80 = 110,731.70/x - Step 3: Cross multiply
260,541.20x = 390,811.80 × 110,731.70 - Step 4: Simplify right side
260,541.20x = 43,275,254,994.06 - Step 5: Solve for x
x = 43,275,254,994.06/260,541.20 - Step 6: Final answer
x = 166,097.55
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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.