Finding the Fourth Proportional to 257,651,420.80, 386,178,532.80 and 104,221,609.60
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Solution
The fourth proportional to 257,651,420.80, 386,178,532.80 and 104,221,609.60 is: 156,211,629.48
Step by Step Solution
- Step 1: Write the proportion equation
257,651,420.80 : 386,178,532.80 = 104,221,609.60 : x - Step 2: Convert to fraction form
257,651,420.80/386,178,532.80 = 104,221,609.60/x - Step 3: Cross multiply
257,651,420.80x = 386,178,532.80 × 104,221,609.60 - Step 4: Simplify right side
257,651,420.80x = 40,248,148,281,382,392 - Step 5: Solve for x
x = 40,248,148,281,382,392/257,651,420.80 - Step 6: Final answer
x = 156,211,629.48
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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.