Finding the Fourth Proportional to 278,498,807.99, 417,762,087.90 and 105,988,991.57
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Solution
The fourth proportional to 278,498,807.99, 417,762,087.90 and 105,988,991.57 is: 158,988,768.14
Step by Step Solution
- Step 1: Write the proportion equation
278,498,807.99 : 417,762,087.90 = 105,988,991.57 : x - Step 2: Convert to fraction form
278,498,807.99/417,762,087.90 = 105,988,991.57/x - Step 3: Cross multiply
278,498,807.99x = 417,762,087.90 × 105,988,991.57 - Step 4: Simplify right side
278,498,807.99x = 44,278,182,411,779,040 - Step 5: Solve for x
x = 44,278,182,411,779,040/278,498,807.99 - Step 6: Final answer
x = 158,988,768.14
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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.