Finding the Fourth Proportional to 398,686.86, 598,248.99 and 161,965.98
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Solution
The fourth proportional to 398,686.86, 598,248.99 and 161,965.98 is: 243,037.82
Step by Step Solution
- Step 1: Write the proportion equation
398,686.86 : 598,248.99 = 161,965.98 : x - Step 2: Convert to fraction form
398,686.86/598,248.99 = 161,965.98/x - Step 3: Cross multiply
398,686.86x = 598,248.99 × 161,965.98 - Step 4: Simplify right side
398,686.86x = 96,895,983,949.36 - Step 5: Solve for x
x = 96,895,983,949.36/398,686.86 - Step 6: Final answer
x = 243,037.82
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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.