Finding the Fourth Proportional to 288,587,235.42, 398,255,487.75 and 156,432,620.70
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Solution
The fourth proportional to 288,587,235.42, 398,255,487.75 and 156,432,620.70 is: 215,879,782.65
Step by Step Solution
- Step 1: Write the proportion equation
288,587,235.42 : 398,255,487.75 = 156,432,620.70 : x - Step 2: Convert to fraction form
288,587,235.42/398,255,487.75 = 156,432,620.70/x - Step 3: Cross multiply
288,587,235.42x = 398,255,487.75 × 156,432,620.70 - Step 4: Simplify right side
288,587,235.42x = 62,300,149,656,889,240 - Step 5: Solve for x
x = 62,300,149,656,889,240/288,587,235.42 - Step 6: Final answer
x = 215,879,782.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.