Finding the Fourth Proportional to 261,605,776.47, 392,395,620.87 and 97,831,492.80
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Solution
The fourth proportional to 261,605,776.47, 392,395,620.87 and 97,831,492.80 is: 146,742,361.26
Step by Step Solution
- Step 1: Write the proportion equation
261,605,776.47 : 392,395,620.87 = 97,831,492.80 : x - Step 2: Convert to fraction form
261,605,776.47/392,395,620.87 = 97,831,492.80/x - Step 3: Cross multiply
261,605,776.47x = 392,395,620.87 × 97,831,492.80 - Step 4: Simplify right side
261,605,776.47x = 38,388,649,357,894,936 - Step 5: Solve for x
x = 38,388,649,357,894,936/261,605,776.47 - Step 6: Final answer
x = 146,742,361.26
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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.