Finding the Fourth Proportional to 278,840,598.90, 418,260,898.35 and 97,087,776.90
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Solution
The fourth proportional to 278,840,598.90, 418,260,898.35 and 97,087,776.90 is: 145,631,665.35
Step by Step Solution
- Step 1: Write the proportion equation
278,840,598.90 : 418,260,898.35 = 97,087,776.90 : x - Step 2: Convert to fraction form
278,840,598.90/418,260,898.35 = 97,087,776.90/x - Step 3: Cross multiply
278,840,598.90x = 418,260,898.35 × 97,087,776.90 - Step 4: Simplify right side
278,840,598.90x = 40,608,020,784,998,384 - Step 5: Solve for x
x = 40,608,020,784,998,384/278,840,598.90 - Step 6: Final answer
x = 145,631,665.35
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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.