Finding the Fourth Proportional to 239,150,248.20, 358,725,372.30 and 218,742,913.80
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Solution
The fourth proportional to 239,150,248.20, 358,725,372.30 and 218,742,913.80 is: 328,114,370.70
Step by Step Solution
- Step 1: Write the proportion equation
239,150,248.20 : 358,725,372.30 = 218,742,913.80 : x - Step 2: Convert to fraction form
239,150,248.20/358,725,372.30 = 218,742,913.80/x - Step 3: Cross multiply
239,150,248.20x = 358,725,372.30 × 218,742,913.80 - Step 4: Simplify right side
239,150,248.20x = 78,468,633,190,891,808 - Step 5: Solve for x
x = 78,468,633,190,891,808/239,150,248.20 - Step 6: Final answer
x = 328,114,370.70
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1.5x scale
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.