Finding the Fourth Proportional to 293,688,031.20, 440,532,046.80 and 157,639,135.20
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Solution
The fourth proportional to 293,688,031.20, 440,532,046.80 and 157,639,135.20 is: 236,458,702.80
Step by Step Solution
- Step 1: Write the proportion equation
293,688,031.20 : 440,532,046.80 = 157,639,135.20 : x - Step 2: Convert to fraction form
293,688,031.20/440,532,046.80 = 157,639,135.20/x - Step 3: Cross multiply
293,688,031.20x = 440,532,046.80 × 157,639,135.20 - Step 4: Simplify right side
293,688,031.20x = 69,445,090,885,437,920 - Step 5: Solve for x
x = 69,445,090,885,437,920/293,688,031.20 - Step 6: Final answer
x = 236,458,702.80
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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.