Finding the Fourth Proportional to 261,605,781.48, 392,395,628.36 and 97,831,497.80
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Solution
The fourth proportional to 261,605,781.48, 392,395,628.36 and 97,831,497.80 is: 146,742,368.75
Step by Step Solution
- Step 1: Write the proportion equation
261,605,781.48 : 392,395,628.36 = 97,831,497.80 : x - Step 2: Convert to fraction form
261,605,781.48/392,395,628.36 = 97,831,497.80/x - Step 3: Cross multiply
261,605,781.48x = 392,395,628.36 × 97,831,497.80 - Step 4: Simplify right side
261,605,781.48x = 38,388,652,052,630,960 - Step 5: Solve for x
x = 38,388,652,052,630,960/261,605,781.48 - Step 6: Final answer
x = 146,742,368.75
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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.