Finding the Fourth Proportional to 390,934.22, 586,411.58 and 134,764.08
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Solution
The fourth proportional to 390,934.22, 586,411.58 and 134,764.08 is: 202,149.65
Step by Step Solution
- Step 1: Write the proportion equation
390,934.22 : 586,411.58 = 134,764.08 : x - Step 2: Convert to fraction form
390,934.22/586,411.58 = 134,764.08/x - Step 3: Cross multiply
390,934.22x = 586,411.58 × 134,764.08 - Step 4: Simplify right side
390,934.22x = 79,027,217,080.05 - Step 5: Solve for x
x = 79,027,217,080.05/390,934.22 - Step 6: Final answer
x = 202,149.65
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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.