Finding the Fourth Proportional to 320,436,213.70, 480,654,320.55 and 212,730,837.70
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Solution
The fourth proportional to 320,436,213.70, 480,654,320.55 and 212,730,837.70 is: 319,096,256.55
Step by Step Solution
- Step 1: Write the proportion equation
320,436,213.70 : 480,654,320.55 = 212,730,837.70 : x - Step 2: Convert to fraction form
320,436,213.70/480,654,320.55 = 212,730,837.70/x - Step 3: Cross multiply
320,436,213.70x = 480,654,320.55 × 212,730,837.70 - Step 4: Simplify right side
320,436,213.70x = 102,249,996,254,725,824 - Step 5: Solve for x
x = 102,249,996,254,725,824/320,436,213.70 - Step 6: Final answer
x = 319,096,256.55
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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.