Finding the Fourth Proportional to 398,521.62, 549,952.74 and 217,235.12
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Solution
The fourth proportional to 398,521.62, 549,952.74 and 217,235.12 is: 299,780.59
Step by Step Solution
- Step 1: Write the proportion equation
398,521.62 : 549,952.74 = 217,235.12 : x - Step 2: Convert to fraction form
398,521.62/549,952.74 = 217,235.12/x - Step 3: Cross multiply
398,521.62x = 549,952.74 × 217,235.12 - Step 4: Simplify right side
398,521.62x = 119,469,046,718.47 - Step 5: Solve for x
x = 119,469,046,718.47/398,521.62 - Step 6: Final answer
x = 299,780.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.