Finding the Fourth Proportional to 280,680,757.40, 387,319,781.90 and 163,197,752.74
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Solution
The fourth proportional to 280,680,757.40, 387,319,781.90 and 163,197,752.74 is: 225,201,465.82
Step by Step Solution
- Step 1: Write the proportion equation
280,680,757.40 : 387,319,781.90 = 163,197,752.74 : x - Step 2: Convert to fraction form
280,680,757.40/387,319,781.90 = 163,197,752.74/x - Step 3: Cross multiply
280,680,757.40x = 387,319,781.90 × 163,197,752.74 - Step 4: Simplify right side
280,680,757.40x = 63,209,717,995,074,344 - Step 5: Solve for x
x = 63,209,717,995,074,344/280,680,757.40 - Step 6: Final answer
x = 225,201,465.82
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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.