Finding the Fourth Proportional to 260,603,386.40, 390,953,136.36 and 85,736,262.08
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Solution
The fourth proportional to 260,603,386.40, 390,953,136.36 and 85,736,262.08 is: 128,620,203.37
Step by Step Solution
- Step 1: Write the proportion equation
260,603,386.40 : 390,953,136.36 = 85,736,262.08 : x - Step 2: Convert to fraction form
260,603,386.40/390,953,136.36 = 85,736,262.08/x - Step 3: Cross multiply
260,603,386.40x = 390,953,136.36 × 85,736,262.08 - Step 4: Simplify right side
260,603,386.40x = 33,518,860,558,004,172 - Step 5: Solve for x
x = 33,518,860,558,004,172/260,603,386.40 - Step 6: Final answer
x = 128,620,203.37
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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.