Finding the Fourth Proportional to 261,605,851.74, 392,395,733.10 and 97,831,567.80
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Solution
The fourth proportional to 261,605,851.74, 392,395,733.10 and 97,831,567.80 is: 146,742,473.50
Step by Step Solution
- Step 1: Write the proportion equation
261,605,851.74 : 392,395,733.10 = 97,831,567.80 : x - Step 2: Convert to fraction form
261,605,851.74/392,395,733.10 = 97,831,567.80/x - Step 3: Cross multiply
261,605,851.74x = 392,395,733.10 × 97,831,567.80 - Step 4: Simplify right side
261,605,851.74x = 38,388,689,767,203,352 - Step 5: Solve for x
x = 38,388,689,767,203,352/261,605,851.74 - Step 6: Final answer
x = 146,742,473.50
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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.