Finding the Fourth Proportional to 391,156.13, 586,642.13 and 106,779.08
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Solution
The fourth proportional to 391,156.13, 586,642.13 and 106,779.08 is: 160,143.48
Step by Step Solution
- Step 1: Write the proportion equation
391,156.13 : 586,642.13 = 106,779.08 : x - Step 2: Convert to fraction form
391,156.13/586,642.13 = 106,779.08/x - Step 3: Cross multiply
391,156.13x = 586,642.13 × 106,779.08 - Step 4: Simplify right side
391,156.13x = 62,641,104,963.91 - Step 5: Solve for x
x = 62,641,104,963.91/391,156.13 - Step 6: Final answer
x = 160,143.48
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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.