Finding the Fourth Proportional to 288,626,074.18, 432,895,367.41 and 78,553,130.21
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Solution
The fourth proportional to 288,626,074.18, 432,895,367.41 and 78,553,130.21 is: 117,817,789.88
Step by Step Solution
- Step 1: Write the proportion equation
288,626,074.18 : 432,895,367.41 = 78,553,130.21 : x - Step 2: Convert to fraction form
288,626,074.18/432,895,367.41 = 78,553,130.21/x - Step 3: Cross multiply
288,626,074.18x = 432,895,367.41 × 78,553,130.21 - Step 4: Simplify right side
288,626,074.18x = 34,005,286,162,726,020 - Step 5: Solve for x
x = 34,005,286,162,726,020/288,626,074.18 - Step 6: Final answer
x = 117,817,789.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.