Finding the Fourth Proportional to 319,091,155.80, 478,636,733.70 and 166,036,147.80
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Solution
The fourth proportional to 319,091,155.80, 478,636,733.70 and 166,036,147.80 is: 249,054,221.70
Step by Step Solution
- Step 1: Write the proportion equation
319,091,155.80 : 478,636,733.70 = 166,036,147.80 : x - Step 2: Convert to fraction form
319,091,155.80/478,636,733.70 = 166,036,147.80/x - Step 3: Cross multiply
319,091,155.80x = 478,636,733.70 × 166,036,147.80 - Step 4: Simplify right side
319,091,155.80x = 79,470,999,459,122,448 - Step 5: Solve for x
x = 79,470,999,459,122,448/319,091,155.80 - Step 6: Final answer
x = 249,054,221.70
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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.