Finding the Fourth Proportional to 420,270,493.80, 630,405,740.70 and 133,056,157.80
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Solution
The fourth proportional to 420,270,493.80, 630,405,740.70 and 133,056,157.80 is: 199,584,236.70
Step by Step Solution
- Step 1: Write the proportion equation
420,270,493.80 : 630,405,740.70 = 133,056,157.80 : x - Step 2: Convert to fraction form
420,270,493.80/630,405,740.70 = 133,056,157.80/x - Step 3: Cross multiply
420,270,493.80x = 630,405,740.70 × 133,056,157.80 - Step 4: Simplify right side
420,270,493.80x = 83,879,365,712,605,088 - Step 5: Solve for x
x = 83,879,365,712,605,088/420,270,493.80 - Step 6: Final answer
x = 199,584,236.70
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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.