Finding the Fourth Proportional to 288,584,772.87, 398,236,317.36 and 156,422,931.84
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Solution
The fourth proportional to 288,584,772.87, 398,236,317.36 and 156,422,931.84 is: 215,857,862.86
Step by Step Solution
- Step 1: Write the proportion equation
288,584,772.87 : 398,236,317.36 = 156,422,931.84 : x - Step 2: Convert to fraction form
288,584,772.87/398,236,317.36 = 156,422,931.84/x - Step 3: Cross multiply
288,584,772.87x = 398,236,317.36 × 156,422,931.84 - Step 4: Simplify right side
288,584,772.87x = 62,293,292,326,029,304 - Step 5: Solve for x
x = 62,293,292,326,029,304/288,584,772.87 - Step 6: Final answer
x = 215,857,862.86
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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.