Finding the Fourth Proportional to 239,213,987.80, 358,988,943.30 and 102,997,130.20
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Solution
The fourth proportional to 239,213,987.80, 358,988,943.30 and 102,997,130.20 is: 154,568,013.66
Step by Step Solution
- Step 1: Write the proportion equation
239,213,987.80 : 358,988,943.30 = 102,997,130.20 : x - Step 2: Convert to fraction form
239,213,987.80/358,988,943.30 = 102,997,130.20/x - Step 3: Cross multiply
239,213,987.80x = 358,988,943.30 × 102,997,130.20 - Step 4: Simplify right side
239,213,987.80x = 36,974,830,933,430,520 - Step 5: Solve for x
x = 36,974,830,933,430,520/239,213,987.80 - Step 6: Final answer
x = 154,568,013.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.