Finding the Fourth Proportional to 280,976,350.47, 387,701,107.34 and 176,479,987.11
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Solution
The fourth proportional to 280,976,350.47, 387,701,107.34 and 176,479,987.11 is: 243,513,328.83
Step by Step Solution
- Step 1: Write the proportion equation
280,976,350.47 : 387,701,107.34 = 176,479,987.11 : x - Step 2: Convert to fraction form
280,976,350.47/387,701,107.34 = 176,479,987.11/x - Step 3: Cross multiply
280,976,350.47x = 387,701,107.34 × 176,479,987.11 - Step 4: Simplify right side
280,976,350.47x = 68,421,486,425,013,528 - Step 5: Solve for x
x = 68,421,486,425,013,528/280,976,350.47 - Step 6: Final answer
x = 243,513,328.83
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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.