Finding the Fourth Proportional to 286,640.36, 430,038.30 and 99,666.44
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Solution
The fourth proportional to 286,640.36, 430,038.30 and 99,666.44 is: 149,526.70
Step by Step Solution
- Step 1: Write the proportion equation
286,640.36 : 430,038.30 = 99,666.44 : x - Step 2: Convert to fraction form
286,640.36/430,038.30 = 99,666.44/x - Step 3: Cross multiply
286,640.36x = 430,038.30 × 99,666.44 - Step 4: Simplify right side
286,640.36x = 42,860,386,424.65 - Step 5: Solve for x
x = 42,860,386,424.65/286,640.36 - Step 6: Final answer
x = 149,526.70
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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.