Finding the Fourth Proportional to 261,924,779.68, 392,820,130.24 and 77,649,163.84
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Solution
The fourth proportional to 261,924,779.68, 392,820,130.24 and 77,649,163.84 is: 116,453,871.57
Step by Step Solution
- Step 1: Write the proportion equation
261,924,779.68 : 392,820,130.24 = 77,649,163.84 : x - Step 2: Convert to fraction form
261,924,779.68/392,820,130.24 = 77,649,163.84/x - Step 3: Cross multiply
261,924,779.68x = 392,820,130.24 × 77,649,163.84 - Step 4: Simplify right side
261,924,779.68x = 30,502,154,652,655,900 - Step 5: Solve for x
x = 30,502,154,652,655,900/261,924,779.68 - Step 6: Final answer
x = 116,453,871.57
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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.