Finding the Fourth Proportional to 402,387,639.50, 555,213,536.96 and 235,091,590.53
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Solution
The fourth proportional to 402,387,639.50, 555,213,536.96 and 235,091,590.53 is: 324,378,834.43
Step by Step Solution
- Step 1: Write the proportion equation
402,387,639.50 : 555,213,536.96 = 235,091,590.53 : x - Step 2: Convert to fraction form
402,387,639.50/555,213,536.96 = 235,091,590.53/x - Step 3: Cross multiply
402,387,639.50x = 555,213,536.96 × 235,091,590.53 - Step 4: Simplify right side
402,387,639.50x = 130,526,033,488,898,192 - Step 5: Solve for x
x = 130,526,033,488,898,192/402,387,639.50 - Step 6: Final answer
x = 324,378,834.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.