Finding the Fourth Proportional to 355,007,115.12, 489,900,421.21 and 198,375,509.19
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Solution
The fourth proportional to 355,007,115.12, 489,900,421.21 and 198,375,509.19 is: 273,752,951.33
Step by Step Solution
- Step 1: Write the proportion equation
355,007,115.12 : 489,900,421.21 = 198,375,509.19 : x - Step 2: Convert to fraction form
355,007,115.12/489,900,421.21 = 198,375,509.19/x - Step 3: Cross multiply
355,007,115.12x = 489,900,421.21 × 198,375,509.19 - Step 4: Simplify right side
355,007,115.12x = 97,184,245,506,487,840 - Step 5: Solve for x
x = 97,184,245,506,487,840/355,007,115.12 - Step 6: Final answer
x = 273,752,951.33
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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.